<?xml version="1.0" encoding="UTF-8"?>

<!--XBRL Document Created with the Workiva Platform-->
<!--Copyright 2025 Workiva-->
<!--r:70602fa7-989a-4588-b94e-123e768aa6b7,g:447fdeb7-890e-4f12-aa9f-f6bac15b699c-->
<link:linkbase xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xbrldt="http://xbrl.org/2005/xbrldt" xsi:schemaLocation="http://www.xbrl.org/2003/linkbase http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd">
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/all" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#all"/>
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#hypercube-dimension"/>
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#dimension-default"/>
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#dimension-domain"/>
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/domain-member" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#domain-member"/>
  <link:roleRef roleURI="http://www.symbotic.com/role/Cover" xlink:type="simple" xlink:href="sym-20250329.xsd#Cover"/>
  <link:definitionLink xlink:role="http://www.symbotic.com/role/Cover" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_dei_DocumentInformationLineItems_d236db80-da9e-410f-97a7-dae15dfe91ca" xlink:href="https://xbrl.sec.gov/dei/2024/dei-2024.xsd#dei_DocumentInformationLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_DocumentInformationTable_2f1b5f0f-eb93-42d0-b151-f22e5c26993f" xlink:href="https://xbrl.sec.gov/dei/2024/dei-2024.xsd#dei_DocumentInformationTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_dei_DocumentInformationLineItems_d236db80-da9e-410f-97a7-dae15dfe91ca" xlink:to="loc_dei_DocumentInformationTable_2f1b5f0f-eb93-42d0-b151-f22e5c26993f" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementClassOfStockAxis_a97234d9-7595-48f6-bb8b-b8221c795692" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_StatementClassOfStockAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_dei_DocumentInformationTable_2f1b5f0f-eb93-42d0-b151-f22e5c26993f" xlink:to="loc_us-gaap_StatementClassOfStockAxis_a97234d9-7595-48f6-bb8b-b8221c795692" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ClassOfStockDomain_a97234d9-7595-48f6-bb8b-b8221c795692_default" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ClassOfStockDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementClassOfStockAxis_a97234d9-7595-48f6-bb8b-b8221c795692" xlink:to="loc_us-gaap_ClassOfStockDomain_a97234d9-7595-48f6-bb8b-b8221c795692_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ClassOfStockDomain_8103f4d4-87a9-448b-baf2-dfbc0e7b4022" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ClassOfStockDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementClassOfStockAxis_a97234d9-7595-48f6-bb8b-b8221c795692" xlink:to="loc_us-gaap_ClassOfStockDomain_8103f4d4-87a9-448b-baf2-dfbc0e7b4022" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonClassAMember_960f2b9e-d788-4265-aa41-0d4dac307b0b" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_CommonClassAMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockDomain_8103f4d4-87a9-448b-baf2-dfbc0e7b4022" xlink:to="loc_us-gaap_CommonClassAMember_960f2b9e-d788-4265-aa41-0d4dac307b0b" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_sym_CommonClassV1Member_d80d0f42-4c08-4f40-9e7d-16ed213cd167" xlink:href="sym-20250329.xsd#sym_CommonClassV1Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockDomain_8103f4d4-87a9-448b-baf2-dfbc0e7b4022" xlink:to="loc_sym_CommonClassV1Member_d80d0f42-4c08-4f40-9e7d-16ed213cd167" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_sym_CommonClassV3Member_0b9ebe18-81e7-4a9f-a652-536f3ead90fa" xlink:href="sym-20250329.xsd#sym_CommonClassV3Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockDomain_8103f4d4-87a9-448b-baf2-dfbc0e7b4022" xlink:to="loc_sym_CommonClassV3Member_0b9ebe18-81e7-4a9f-a652-536f3ead90fa" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_DocumentType_30f0aec7-fcf0-41be-b1f4-f29f5d33efaf" xlink:href="https://xbrl.sec.gov/dei/2024/dei-2024.xsd#dei_DocumentType"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_d236db80-da9e-410f-97a7-dae15dfe91ca" xlink:to="loc_dei_DocumentType_30f0aec7-fcf0-41be-b1f4-f29f5d33efaf" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_DocumentQuarterlyReport_ee21c76b-7478-4f3d-9a8b-47ddb6d34467" xlink:href="https://xbrl.sec.gov/dei/2024/dei-2024.xsd#dei_DocumentQuarterlyReport"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_d236db80-da9e-410f-97a7-dae15dfe91ca" xlink:to="loc_dei_DocumentQuarterlyReport_ee21c76b-7478-4f3d-9a8b-47ddb6d34467" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_DocumentPeriodEndDate_c1adbea9-b7f4-4967-bafd-79b9ba0b03c9" xlink:href="https://xbrl.sec.gov/dei/2024/dei-2024.xsd#dei_DocumentPeriodEndDate"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_d236db80-da9e-410f-97a7-dae15dfe91ca" xlink:to="loc_dei_DocumentPeriodEndDate_c1adbea9-b7f4-4967-bafd-79b9ba0b03c9" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_DocumentTransitionReport_dfa4d191-5667-4618-b0a5-f79104630461" xlink:href="https://xbrl.sec.gov/dei/2024/dei-2024.xsd#dei_DocumentTransitionReport"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_d236db80-da9e-410f-97a7-dae15dfe91ca" xlink:to="loc_dei_DocumentTransitionReport_dfa4d191-5667-4618-b0a5-f79104630461" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityFileNumber_507bed31-5df5-45e9-83d0-a8e349f5d84a" xlink:href="https://xbrl.sec.gov/dei/2024/dei-2024.xsd#dei_EntityFileNumber"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_d236db80-da9e-410f-97a7-dae15dfe91ca" xlink:to="loc_dei_EntityFileNumber_507bed31-5df5-45e9-83d0-a8e349f5d84a" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityRegistrantName_805df550-3281-4a8d-9690-a84f24ba2cb2" xlink:href="https://xbrl.sec.gov/dei/2024/dei-2024.xsd#dei_EntityRegistrantName"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_d236db80-da9e-410f-97a7-dae15dfe91ca" xlink:to="loc_dei_EntityRegistrantName_805df550-3281-4a8d-9690-a84f24ba2cb2" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityIncorporationStateCountryCode_5f2ceca1-0343-447a-b556-169686966c07" xlink:href="https://xbrl.sec.gov/dei/2024/dei-2024.xsd#dei_EntityIncorporationStateCountryCode"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_d236db80-da9e-410f-97a7-dae15dfe91ca" xlink:to="loc_dei_EntityIncorporationStateCountryCode_5f2ceca1-0343-447a-b556-169686966c07" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityTaxIdentificationNumber_b624093c-3a51-410f-be44-1ab55b0f63e6" xlink:href="https://xbrl.sec.gov/dei/2024/dei-2024.xsd#dei_EntityTaxIdentificationNumber"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_d236db80-da9e-410f-97a7-dae15dfe91ca" xlink:to="loc_dei_EntityTaxIdentificationNumber_b624093c-3a51-410f-be44-1ab55b0f63e6" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressAddressLine1_49e21e4b-398a-4b0e-8db8-1323172a2908" xlink:href="https://xbrl.sec.gov/dei/2024/dei-2024.xsd#dei_EntityAddressAddressLine1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_d236db80-da9e-410f-97a7-dae15dfe91ca" xlink:to="loc_dei_EntityAddressAddressLine1_49e21e4b-398a-4b0e-8db8-1323172a2908" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressCityOrTown_50820560-5259-48ce-b98e-288d38e70fe8" xlink:href="https://xbrl.sec.gov/dei/2024/dei-2024.xsd#dei_EntityAddressCityOrTown"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_d236db80-da9e-410f-97a7-dae15dfe91ca" xlink:to="loc_dei_EntityAddressCityOrTown_50820560-5259-48ce-b98e-288d38e70fe8" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressStateOrProvince_a43e8ca7-3edb-4406-a4f6-6a0b9bf9b5d5" xlink:href="https://xbrl.sec.gov/dei/2024/dei-2024.xsd#dei_EntityAddressStateOrProvince"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_d236db80-da9e-410f-97a7-dae15dfe91ca" xlink:to="loc_dei_EntityAddressStateOrProvince_a43e8ca7-3edb-4406-a4f6-6a0b9bf9b5d5" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressPostalZipCode_299f3310-b344-4447-ac31-ff3e56d44ac0" xlink:href="https://xbrl.sec.gov/dei/2024/dei-2024.xsd#dei_EntityAddressPostalZipCode"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_d236db80-da9e-410f-97a7-dae15dfe91ca" xlink:to="loc_dei_EntityAddressPostalZipCode_299f3310-b344-4447-ac31-ff3e56d44ac0" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_CityAreaCode_c904a682-9c5d-4e2b-9ce6-b49a3ddade5e" xlink:href="https://xbrl.sec.gov/dei/2024/dei-2024.xsd#dei_CityAreaCode"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_d236db80-da9e-410f-97a7-dae15dfe91ca" xlink:to="loc_dei_CityAreaCode_c904a682-9c5d-4e2b-9ce6-b49a3ddade5e" xlink:type="arc" order="12"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LocalPhoneNumber_dd5a856a-d7af-44e8-9d7a-8be370c73804" xlink:href="https://xbrl.sec.gov/dei/2024/dei-2024.xsd#dei_LocalPhoneNumber"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_d236db80-da9e-410f-97a7-dae15dfe91ca" xlink:to="loc_dei_LocalPhoneNumber_dd5a856a-d7af-44e8-9d7a-8be370c73804" xlink:type="arc" order="13"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_Security12bTitle_8be72e87-b910-4182-a0ae-6ccb23b1d2c0" xlink:href="https://xbrl.sec.gov/dei/2024/dei-2024.xsd#dei_Security12bTitle"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_d236db80-da9e-410f-97a7-dae15dfe91ca" xlink:to="loc_dei_Security12bTitle_8be72e87-b910-4182-a0ae-6ccb23b1d2c0" xlink:type="arc" order="14"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_TradingSymbol_5bc42ba5-b1eb-4114-b4bd-1e4c7a68d59d" xlink:href="https://xbrl.sec.gov/dei/2024/dei-2024.xsd#dei_TradingSymbol"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_d236db80-da9e-410f-97a7-dae15dfe91ca" xlink:to="loc_dei_TradingSymbol_5bc42ba5-b1eb-4114-b4bd-1e4c7a68d59d" xlink:type="arc" order="15"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_SecurityExchangeName_cd3d426e-de5c-4df6-8bf2-fd6bc1476575" xlink:href="https://xbrl.sec.gov/dei/2024/dei-2024.xsd#dei_SecurityExchangeName"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_d236db80-da9e-410f-97a7-dae15dfe91ca" xlink:to="loc_dei_SecurityExchangeName_cd3d426e-de5c-4df6-8bf2-fd6bc1476575" xlink:type="arc" order="16"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityCurrentReportingStatus_e172cfa9-62d0-4572-a3d2-c83055fb185f" xlink:href="https://xbrl.sec.gov/dei/2024/dei-2024.xsd#dei_EntityCurrentReportingStatus"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_d236db80-da9e-410f-97a7-dae15dfe91ca" xlink:to="loc_dei_EntityCurrentReportingStatus_e172cfa9-62d0-4572-a3d2-c83055fb185f" xlink:type="arc" order="17"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityInteractiveDataCurrent_7c3c8e32-727f-4e71-9509-6ed3363c79a0" xlink:href="https://xbrl.sec.gov/dei/2024/dei-2024.xsd#dei_EntityInteractiveDataCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_d236db80-da9e-410f-97a7-dae15dfe91ca" xlink:to="loc_dei_EntityInteractiveDataCurrent_7c3c8e32-727f-4e71-9509-6ed3363c79a0" xlink:type="arc" order="18"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityFilerCategory_c6cdef79-7b12-47de-8dd5-4988e2f03820" xlink:href="https://xbrl.sec.gov/dei/2024/dei-2024.xsd#dei_EntityFilerCategory"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_d236db80-da9e-410f-97a7-dae15dfe91ca" xlink:to="loc_dei_EntityFilerCategory_c6cdef79-7b12-47de-8dd5-4988e2f03820" xlink:type="arc" order="19"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntitySmallBusiness_ddfdd181-b989-4b16-aa5a-876d04f11e26" xlink:href="https://xbrl.sec.gov/dei/2024/dei-2024.xsd#dei_EntitySmallBusiness"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_d236db80-da9e-410f-97a7-dae15dfe91ca" xlink:to="loc_dei_EntitySmallBusiness_ddfdd181-b989-4b16-aa5a-876d04f11e26" xlink:type="arc" order="20"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityEmergingGrowthCompany_0e524e5a-6566-4da2-aeed-9f4aac2ad694" xlink:href="https://xbrl.sec.gov/dei/2024/dei-2024.xsd#dei_EntityEmergingGrowthCompany"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_d236db80-da9e-410f-97a7-dae15dfe91ca" xlink:to="loc_dei_EntityEmergingGrowthCompany_0e524e5a-6566-4da2-aeed-9f4aac2ad694" xlink:type="arc" order="21"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityShellCompany_707b542a-e4ab-48b4-9db5-955a5c911ec7" xlink:href="https://xbrl.sec.gov/dei/2024/dei-2024.xsd#dei_EntityShellCompany"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_d236db80-da9e-410f-97a7-dae15dfe91ca" xlink:to="loc_dei_EntityShellCompany_707b542a-e4ab-48b4-9db5-955a5c911ec7" xlink:type="arc" order="22"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityCommonStockSharesOutstanding_1ce0333f-7215-461b-92b6-f0e6cc033c44" xlink:href="https://xbrl.sec.gov/dei/2024/dei-2024.xsd#dei_EntityCommonStockSharesOutstanding"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_d236db80-da9e-410f-97a7-dae15dfe91ca" xlink:to="loc_dei_EntityCommonStockSharesOutstanding_1ce0333f-7215-461b-92b6-f0e6cc033c44" xlink:type="arc" order="23"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityCentralIndexKey_032bd929-c841-4afb-8ebe-f9e6acd67c9f" xlink:href="https://xbrl.sec.gov/dei/2024/dei-2024.xsd#dei_EntityCentralIndexKey"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_d236db80-da9e-410f-97a7-dae15dfe91ca" xlink:to="loc_dei_EntityCentralIndexKey_032bd929-c841-4afb-8ebe-f9e6acd67c9f" xlink:type="arc" order="24"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_AmendmentFlag_ceaf1e96-6a29-48cc-b49e-f32440124edf" xlink:href="https://xbrl.sec.gov/dei/2024/dei-2024.xsd#dei_AmendmentFlag"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_d236db80-da9e-410f-97a7-dae15dfe91ca" xlink:to="loc_dei_AmendmentFlag_ceaf1e96-6a29-48cc-b49e-f32440124edf" xlink:type="arc" order="25"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_DocumentFiscalYearFocus_626fd70c-ab46-46ac-bca3-eb3adfa33a86" xlink:href="https://xbrl.sec.gov/dei/2024/dei-2024.xsd#dei_DocumentFiscalYearFocus"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_d236db80-da9e-410f-97a7-dae15dfe91ca" xlink:to="loc_dei_DocumentFiscalYearFocus_626fd70c-ab46-46ac-bca3-eb3adfa33a86" xlink:type="arc" order="26"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_DocumentFiscalPeriodFocus_6e763507-7fc7-4988-8657-7c135bffa2a9" xlink:href="https://xbrl.sec.gov/dei/2024/dei-2024.xsd#dei_DocumentFiscalPeriodFocus"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_d236db80-da9e-410f-97a7-dae15dfe91ca" xlink:to="loc_dei_DocumentFiscalPeriodFocus_6e763507-7fc7-4988-8657-7c135bffa2a9" xlink:type="arc" order="27"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_CurrentFiscalYearEndDate_457d763e-fe94-462a-8315-562dadb7d815" xlink:href="https://xbrl.sec.gov/dei/2024/dei-2024.xsd#dei_CurrentFiscalYearEndDate"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_d236db80-da9e-410f-97a7-dae15dfe91ca" xlink:to="loc_dei_CurrentFiscalYearEndDate_457d763e-fe94-462a-8315-562dadb7d815" xlink:type="arc" order="28"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.symbotic.com/role/UnauditedCondensedConsolidatedBalanceSheets" xlink:type="simple" xlink:href="sym-20250329.xsd#UnauditedCondensedConsolidatedBalanceSheets"/>
  <link:definitionLink xlink:role="http://www.symbotic.com/role/UnauditedCondensedConsolidatedBalanceSheets" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementLineItems_898b4c3e-c93e-4160-965e-861d83b6fded" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_StatementLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementTable_9969276f-d3f7-4ece-bcb4-c413e0ef3b6a" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_StatementTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_StatementLineItems_898b4c3e-c93e-4160-965e-861d83b6fded" xlink:to="loc_us-gaap_StatementTable_9969276f-d3f7-4ece-bcb4-c413e0ef3b6a" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementClassOfStockAxis_2c420abe-db8e-4146-ae3b-36c781a6e801" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_StatementClassOfStockAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_9969276f-d3f7-4ece-bcb4-c413e0ef3b6a" xlink:to="loc_us-gaap_StatementClassOfStockAxis_2c420abe-db8e-4146-ae3b-36c781a6e801" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ClassOfStockDomain_2c420abe-db8e-4146-ae3b-36c781a6e801_default" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ClassOfStockDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementClassOfStockAxis_2c420abe-db8e-4146-ae3b-36c781a6e801" xlink:to="loc_us-gaap_ClassOfStockDomain_2c420abe-db8e-4146-ae3b-36c781a6e801_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ClassOfStockDomain_303bee75-d0fd-4b6c-83e7-a9942b80bd76" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ClassOfStockDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementClassOfStockAxis_2c420abe-db8e-4146-ae3b-36c781a6e801" xlink:to="loc_us-gaap_ClassOfStockDomain_303bee75-d0fd-4b6c-83e7-a9942b80bd76" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonClassAMember_8573689b-b251-4206-9a12-bf6034561f2a" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_CommonClassAMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockDomain_303bee75-d0fd-4b6c-83e7-a9942b80bd76" xlink:to="loc_us-gaap_CommonClassAMember_8573689b-b251-4206-9a12-bf6034561f2a" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_sym_CommonClassV1Member_badf4fd1-f840-4fdb-88fd-05f6a59eaefa" xlink:href="sym-20250329.xsd#sym_CommonClassV1Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockDomain_303bee75-d0fd-4b6c-83e7-a9942b80bd76" xlink:to="loc_sym_CommonClassV1Member_badf4fd1-f840-4fdb-88fd-05f6a59eaefa" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_sym_CommonClassV3Member_61dd3d64-7243-4a09-beb5-4ece405d48b3" xlink:href="sym-20250329.xsd#sym_CommonClassV3Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockDomain_303bee75-d0fd-4b6c-83e7-a9942b80bd76" xlink:to="loc_sym_CommonClassV3Member_61dd3d64-7243-4a09-beb5-4ece405d48b3" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetsAbstract_2da24417-ba6b-45e8-a16d-471cd6eec2dc" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_AssetsAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_898b4c3e-c93e-4160-965e-861d83b6fded" xlink:to="loc_us-gaap_AssetsAbstract_2da24417-ba6b-45e8-a16d-471cd6eec2dc" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetsCurrentAbstract_623db318-6e34-46a4-8685-65976d4aa1ef" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_AssetsCurrentAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsAbstract_2da24417-ba6b-45e8-a16d-471cd6eec2dc" xlink:to="loc_us-gaap_AssetsCurrentAbstract_623db318-6e34-46a4-8685-65976d4aa1ef" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_37f88238-14d9-4204-8f2c-26cae58e8529" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_CashAndCashEquivalentsAtCarryingValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsCurrentAbstract_623db318-6e34-46a4-8685-65976d4aa1ef" xlink:to="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_37f88238-14d9-4204-8f2c-26cae58e8529" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountsReceivableNetCurrent_ec54578d-0dee-4501-9960-ab8b5bd3e464" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_AccountsReceivableNetCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsCurrentAbstract_623db318-6e34-46a4-8685-65976d4aa1ef" xlink:to="loc_us-gaap_AccountsReceivableNetCurrent_ec54578d-0dee-4501-9960-ab8b5bd3e464" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_UnbilledReceivablesCurrent_5f724e23-cfab-4d22-a996-c4a3455369f9" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_UnbilledReceivablesCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsCurrentAbstract_623db318-6e34-46a4-8685-65976d4aa1ef" xlink:to="loc_us-gaap_UnbilledReceivablesCurrent_5f724e23-cfab-4d22-a996-c4a3455369f9" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InventoryNet_35d926ff-0328-4631-b37c-0b95bddef7b5" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_InventoryNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsCurrentAbstract_623db318-6e34-46a4-8685-65976d4aa1ef" xlink:to="loc_us-gaap_InventoryNet_35d926ff-0328-4631-b37c-0b95bddef7b5" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredCostsCurrent_ff659c2e-d96a-4e82-9ae2-950c63c09e9f" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DeferredCostsCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsCurrentAbstract_623db318-6e34-46a4-8685-65976d4aa1ef" xlink:to="loc_us-gaap_DeferredCostsCurrent_ff659c2e-d96a-4e82-9ae2-950c63c09e9f" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PrepaidExpenseAndOtherAssetsCurrent_58d463fe-3dfb-4892-93cc-36b7ea16491e" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_PrepaidExpenseAndOtherAssetsCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsCurrentAbstract_623db318-6e34-46a4-8685-65976d4aa1ef" xlink:to="loc_us-gaap_PrepaidExpenseAndOtherAssetsCurrent_58d463fe-3dfb-4892-93cc-36b7ea16491e" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetsCurrent_4ce05c4b-75df-4dbe-9ce6-ccfb63db6863" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_AssetsCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsCurrentAbstract_623db318-6e34-46a4-8685-65976d4aa1ef" xlink:to="loc_us-gaap_AssetsCurrent_4ce05c4b-75df-4dbe-9ce6-ccfb63db6863" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentNet_1ee1c240-fe97-4a5b-aef1-8df860292942" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_PropertyPlantAndEquipmentNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsAbstract_2da24417-ba6b-45e8-a16d-471cd6eec2dc" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentNet_1ee1c240-fe97-4a5b-aef1-8df860292942" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IntangibleAssetsNetExcludingGoodwill_2d175b0f-4506-450e-a7c0-c97bf71ede27" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_IntangibleAssetsNetExcludingGoodwill"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsAbstract_2da24417-ba6b-45e8-a16d-471cd6eec2dc" xlink:to="loc_us-gaap_IntangibleAssetsNetExcludingGoodwill_2d175b0f-4506-450e-a7c0-c97bf71ede27" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Goodwill_4cad815d-7c2d-4753-bcde-a08c04e6ac2a" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_Goodwill"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsAbstract_2da24417-ba6b-45e8-a16d-471cd6eec2dc" xlink:to="loc_us-gaap_Goodwill_4cad815d-7c2d-4753-bcde-a08c04e6ac2a" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityMethodInvestments_5ffb5f72-15e3-4a84-a395-32dcdb12ad6a" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_EquityMethodInvestments"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsAbstract_2da24417-ba6b-45e8-a16d-471cd6eec2dc" xlink:to="loc_us-gaap_EquityMethodInvestments_5ffb5f72-15e3-4a84-a395-32dcdb12ad6a" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherAssetsNoncurrent_bc830e71-7303-4b44-9e03-44e4fde4508b" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OtherAssetsNoncurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsAbstract_2da24417-ba6b-45e8-a16d-471cd6eec2dc" xlink:to="loc_us-gaap_OtherAssetsNoncurrent_bc830e71-7303-4b44-9e03-44e4fde4508b" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Assets_ed965931-e6ca-445f-a436-35c14f3cd167" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_Assets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsAbstract_2da24417-ba6b-45e8-a16d-471cd6eec2dc" xlink:to="loc_us-gaap_Assets_ed965931-e6ca-445f-a436-35c14f3cd167" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_7a8dfecd-3bfe-4d5f-912e-2da52ca4b2e4" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_LiabilitiesAndStockholdersEquityAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_898b4c3e-c93e-4160-965e-861d83b6fded" xlink:to="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_7a8dfecd-3bfe-4d5f-912e-2da52ca4b2e4" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesCurrentAbstract_54d9ca04-f019-4822-acc5-2eb8f798b81a" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_LiabilitiesCurrentAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_7a8dfecd-3bfe-4d5f-912e-2da52ca4b2e4" xlink:to="loc_us-gaap_LiabilitiesCurrentAbstract_54d9ca04-f019-4822-acc5-2eb8f798b81a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountsPayableCurrent_e8fd339c-547c-4432-933c-b1673d04c634" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_AccountsPayableCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesCurrentAbstract_54d9ca04-f019-4822-acc5-2eb8f798b81a" xlink:to="loc_us-gaap_AccountsPayableCurrent_e8fd339c-547c-4432-933c-b1673d04c634" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_sym_AccruedLiabilitiesAndOtherLiabilitiesCurrent_361b3781-ab2b-4287-b268-0d82e4abd902" xlink:href="sym-20250329.xsd#sym_AccruedLiabilitiesAndOtherLiabilitiesCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesCurrentAbstract_54d9ca04-f019-4822-acc5-2eb8f798b81a" xlink:to="loc_sym_AccruedLiabilitiesAndOtherLiabilitiesCurrent_361b3781-ab2b-4287-b268-0d82e4abd902" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ContractWithCustomerLiabilityCurrent_e9bc8a63-eaf7-4b64-a1a1-43e0f295f734" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ContractWithCustomerLiabilityCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesCurrentAbstract_54d9ca04-f019-4822-acc5-2eb8f798b81a" xlink:to="loc_us-gaap_ContractWithCustomerLiabilityCurrent_e9bc8a63-eaf7-4b64-a1a1-43e0f295f734" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesCurrent_db1a168c-3da1-4707-ae9e-6460ea05ba70" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_LiabilitiesCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesCurrentAbstract_54d9ca04-f019-4822-acc5-2eb8f798b81a" xlink:to="loc_us-gaap_LiabilitiesCurrent_db1a168c-3da1-4707-ae9e-6460ea05ba70" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ContractWithCustomerLiabilityNoncurrent_c99c2d99-ba68-4f43-b008-4f97be51c105" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ContractWithCustomerLiabilityNoncurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_7a8dfecd-3bfe-4d5f-912e-2da52ca4b2e4" xlink:to="loc_us-gaap_ContractWithCustomerLiabilityNoncurrent_c99c2d99-ba68-4f43-b008-4f97be51c105" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherLiabilitiesNoncurrent_85c8bad2-e4b1-4669-92d6-ffe92a407af7" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OtherLiabilitiesNoncurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_7a8dfecd-3bfe-4d5f-912e-2da52ca4b2e4" xlink:to="loc_us-gaap_OtherLiabilitiesNoncurrent_85c8bad2-e4b1-4669-92d6-ffe92a407af7" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Liabilities_4ed864cb-c31f-4f01-8f99-1758d6b83fc2" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_Liabilities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_7a8dfecd-3bfe-4d5f-912e-2da52ca4b2e4" xlink:to="loc_us-gaap_Liabilities_4ed864cb-c31f-4f01-8f99-1758d6b83fc2" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommitmentsAndContingencies_51b64b5d-caac-41bc-99a2-0aad81d29208" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_CommitmentsAndContingencies"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_7a8dfecd-3bfe-4d5f-912e-2da52ca4b2e4" xlink:to="loc_us-gaap_CommitmentsAndContingencies_51b64b5d-caac-41bc-99a2-0aad81d29208" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MembersEquityAbstract_3d2309f8-f202-4ef2-b6c2-a2e909b2ad41" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_MembersEquityAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_7a8dfecd-3bfe-4d5f-912e-2da52ca4b2e4" xlink:to="loc_us-gaap_MembersEquityAbstract_3d2309f8-f202-4ef2-b6c2-a2e909b2ad41" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockValue_351aecc9-a43b-44d4-a97e-8c0b4a6fcaeb" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_CommonStockValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_MembersEquityAbstract_3d2309f8-f202-4ef2-b6c2-a2e909b2ad41" xlink:to="loc_us-gaap_CommonStockValue_351aecc9-a43b-44d4-a97e-8c0b4a6fcaeb" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AdditionalPaidInCapital_dae5283d-11c8-49d8-83d2-6ba998d38386" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_AdditionalPaidInCapital"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_MembersEquityAbstract_3d2309f8-f202-4ef2-b6c2-a2e909b2ad41" xlink:to="loc_us-gaap_AdditionalPaidInCapital_dae5283d-11c8-49d8-83d2-6ba998d38386" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetainedEarningsAccumulatedDeficit_1a102e0e-a052-489f-b689-1721ea1e0d8b" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_RetainedEarningsAccumulatedDeficit"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_MembersEquityAbstract_3d2309f8-f202-4ef2-b6c2-a2e909b2ad41" xlink:to="loc_us-gaap_RetainedEarningsAccumulatedDeficit_1a102e0e-a052-489f-b689-1721ea1e0d8b" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_126bb1a6-aca9-4bea-ab1f-e15c712a5f92" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_MembersEquityAbstract_3d2309f8-f202-4ef2-b6c2-a2e909b2ad41" xlink:to="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_126bb1a6-aca9-4bea-ab1f-e15c712a5f92" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquity_df4515aa-cbf3-4f2b-b2cd-15206254a805" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_StockholdersEquity"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_MembersEquityAbstract_3d2309f8-f202-4ef2-b6c2-a2e909b2ad41" xlink:to="loc_us-gaap_StockholdersEquity_df4515aa-cbf3-4f2b-b2cd-15206254a805" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MinorityInterest_d3583bde-3586-40a7-9b07-077a15d4f356" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_MinorityInterest"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_7a8dfecd-3bfe-4d5f-912e-2da52ca4b2e4" xlink:to="loc_us-gaap_MinorityInterest_d3583bde-3586-40a7-9b07-077a15d4f356" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_6c35283b-3b5e-44bf-9c7f-318b7f3e6431" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_7a8dfecd-3bfe-4d5f-912e-2da52ca4b2e4" xlink:to="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_6c35283b-3b5e-44bf-9c7f-318b7f3e6431" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesAndStockholdersEquity_42101a9f-2055-47c8-a6bd-650b8ffa1ee0" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_LiabilitiesAndStockholdersEquity"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_7a8dfecd-3bfe-4d5f-912e-2da52ca4b2e4" xlink:to="loc_us-gaap_LiabilitiesAndStockholdersEquity_42101a9f-2055-47c8-a6bd-650b8ffa1ee0" xlink:type="arc" order="9"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.symbotic.com/role/UnauditedCondensedConsolidatedBalanceSheetsParenthetical" xlink:type="simple" xlink:href="sym-20250329.xsd#UnauditedCondensedConsolidatedBalanceSheetsParenthetical"/>
  <link:definitionLink xlink:role="http://www.symbotic.com/role/UnauditedCondensedConsolidatedBalanceSheetsParenthetical" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementLineItems_40897c8a-b14e-48a4-86eb-899c0db29d32" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_StatementLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementTable_aa6e8dda-0276-4e31-84de-5d29229ce909" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_StatementTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_StatementLineItems_40897c8a-b14e-48a4-86eb-899c0db29d32" xlink:to="loc_us-gaap_StatementTable_aa6e8dda-0276-4e31-84de-5d29229ce909" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementClassOfStockAxis_1b442c3b-bae4-4663-aac2-6bc9f95a8ea2" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_StatementClassOfStockAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_aa6e8dda-0276-4e31-84de-5d29229ce909" xlink:to="loc_us-gaap_StatementClassOfStockAxis_1b442c3b-bae4-4663-aac2-6bc9f95a8ea2" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ClassOfStockDomain_1b442c3b-bae4-4663-aac2-6bc9f95a8ea2_default" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ClassOfStockDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementClassOfStockAxis_1b442c3b-bae4-4663-aac2-6bc9f95a8ea2" xlink:to="loc_us-gaap_ClassOfStockDomain_1b442c3b-bae4-4663-aac2-6bc9f95a8ea2_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ClassOfStockDomain_a7ce60b8-cdbc-4840-8e08-4643555feb8e" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ClassOfStockDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementClassOfStockAxis_1b442c3b-bae4-4663-aac2-6bc9f95a8ea2" xlink:to="loc_us-gaap_ClassOfStockDomain_a7ce60b8-cdbc-4840-8e08-4643555feb8e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonClassAMember_6cf2f576-39a9-496c-b7bf-5a184d131fb0" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_CommonClassAMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockDomain_a7ce60b8-cdbc-4840-8e08-4643555feb8e" xlink:to="loc_us-gaap_CommonClassAMember_6cf2f576-39a9-496c-b7bf-5a184d131fb0" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_sym_CommonClassV1Member_e6f96827-1394-48ee-ab82-3b3a4574dbfa" xlink:href="sym-20250329.xsd#sym_CommonClassV1Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockDomain_a7ce60b8-cdbc-4840-8e08-4643555feb8e" xlink:to="loc_sym_CommonClassV1Member_e6f96827-1394-48ee-ab82-3b3a4574dbfa" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_sym_CommonClassV3Member_a84cf655-f45c-4a83-b190-f37ee1e59298" xlink:href="sym-20250329.xsd#sym_CommonClassV3Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockDomain_a7ce60b8-cdbc-4840-8e08-4643555feb8e" xlink:to="loc_sym_CommonClassV3Member_a84cf655-f45c-4a83-b190-f37ee1e59298" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockSharesAuthorized_c7104442-a0c7-45ab-b65c-62fa69e1f95e" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_CommonStockSharesAuthorized"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_40897c8a-b14e-48a4-86eb-899c0db29d32" xlink:to="loc_us-gaap_CommonStockSharesAuthorized_c7104442-a0c7-45ab-b65c-62fa69e1f95e" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockSharesIssued_3ac87d26-c824-4990-a0c4-789ed4a4ed59" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_CommonStockSharesIssued"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_40897c8a-b14e-48a4-86eb-899c0db29d32" xlink:to="loc_us-gaap_CommonStockSharesIssued_3ac87d26-c824-4990-a0c4-789ed4a4ed59" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockSharesOutstanding_8dc050ea-4675-4e5b-a781-33e7faa97a5c" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_CommonStockSharesOutstanding"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_40897c8a-b14e-48a4-86eb-899c0db29d32" xlink:to="loc_us-gaap_CommonStockSharesOutstanding_8dc050ea-4675-4e5b-a781-33e7faa97a5c" xlink:type="arc" order="2"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.symbotic.com/role/UnauditedCondensedConsolidatedStatementsofOperations" xlink:type="simple" xlink:href="sym-20250329.xsd#UnauditedCondensedConsolidatedStatementsofOperations"/>
  <link:definitionLink xlink:role="http://www.symbotic.com/role/UnauditedCondensedConsolidatedStatementsofOperations" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementLineItems_bc025f42-766b-48e8-a875-8d66629d0462" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_StatementLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementTable_69c6f53d-594a-491f-92b9-3cf5892cd341" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_StatementTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_StatementLineItems_bc025f42-766b-48e8-a875-8d66629d0462" xlink:to="loc_us-gaap_StatementTable_69c6f53d-594a-491f-92b9-3cf5892cd341" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductOrServiceAxis_90deebbd-cfd2-4d88-b280-4d084c4bdede" xlink:href="https://xbrl.fasb.org/srt/2024/elts/srt-2024.xsd#srt_ProductOrServiceAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_69c6f53d-594a-491f-92b9-3cf5892cd341" xlink:to="loc_srt_ProductOrServiceAxis_90deebbd-cfd2-4d88-b280-4d084c4bdede" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain_90deebbd-cfd2-4d88-b280-4d084c4bdede_default" xlink:href="https://xbrl.fasb.org/srt/2024/elts/srt-2024.xsd#srt_ProductsAndServicesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ProductOrServiceAxis_90deebbd-cfd2-4d88-b280-4d084c4bdede" xlink:to="loc_srt_ProductsAndServicesDomain_90deebbd-cfd2-4d88-b280-4d084c4bdede_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain_f0026416-c6d8-4b59-9884-4f855b77f4da" xlink:href="https://xbrl.fasb.org/srt/2024/elts/srt-2024.xsd#srt_ProductsAndServicesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ProductOrServiceAxis_90deebbd-cfd2-4d88-b280-4d084c4bdede" xlink:to="loc_srt_ProductsAndServicesDomain_f0026416-c6d8-4b59-9884-4f855b77f4da" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_sym_SystemsMember_9dd10360-aad9-4820-9bd4-05d0944e159e" xlink:href="sym-20250329.xsd#sym_SystemsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_f0026416-c6d8-4b59-9884-4f855b77f4da" xlink:to="loc_sym_SystemsMember_9dd10360-aad9-4820-9bd4-05d0944e159e" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_sym_SoftwareMaintenanceAndSupportMember_20c0f0d4-1fad-4a87-9a7f-41678d38cfb3" xlink:href="sym-20250329.xsd#sym_SoftwareMaintenanceAndSupportMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_f0026416-c6d8-4b59-9884-4f855b77f4da" xlink:to="loc_sym_SoftwareMaintenanceAndSupportMember_20c0f0d4-1fad-4a87-9a7f-41678d38cfb3" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_sym_OperationServicesMember_920abf2b-9598-4c68-989e-460130acc090" xlink:href="sym-20250329.xsd#sym_OperationServicesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_f0026416-c6d8-4b59-9884-4f855b77f4da" xlink:to="loc_sym_OperationServicesMember_920abf2b-9598-4c68-989e-460130acc090" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenuesAbstract_81ff259a-9ec2-4246-9b34-be698cc2e026" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_RevenuesAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_bc025f42-766b-48e8-a875-8d66629d0462" xlink:to="loc_us-gaap_RevenuesAbstract_81ff259a-9ec2-4246-9b34-be698cc2e026" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_1441f8d9-f295-42d9-8855-09f90b44afc3" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RevenuesAbstract_81ff259a-9ec2-4246-9b34-be698cc2e026" xlink:to="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_1441f8d9-f295-42d9-8855-09f90b44afc3" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CostOfRevenueAbstract_471f8e07-f144-4d8a-96d6-8bcec3920d72" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_CostOfRevenueAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_bc025f42-766b-48e8-a875-8d66629d0462" xlink:to="loc_us-gaap_CostOfRevenueAbstract_471f8e07-f144-4d8a-96d6-8bcec3920d72" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CostOfRevenue_468ce49c-dac8-4397-8b76-96a08265b288" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_CostOfRevenue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CostOfRevenueAbstract_471f8e07-f144-4d8a-96d6-8bcec3920d72" xlink:to="loc_us-gaap_CostOfRevenue_468ce49c-dac8-4397-8b76-96a08265b288" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GrossProfit_3935fce5-28ed-4aef-8eff-ef740020c87a" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_GrossProfit"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_bc025f42-766b-48e8-a875-8d66629d0462" xlink:to="loc_us-gaap_GrossProfit_3935fce5-28ed-4aef-8eff-ef740020c87a" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingExpensesAbstract_42d99de3-2eac-454e-8383-325acbacd90d" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OperatingExpensesAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_bc025f42-766b-48e8-a875-8d66629d0462" xlink:to="loc_us-gaap_OperatingExpensesAbstract_42d99de3-2eac-454e-8383-325acbacd90d" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ResearchAndDevelopmentExpense_d9d234e2-ea54-4a05-a95f-1d6371f50174" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ResearchAndDevelopmentExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OperatingExpensesAbstract_42d99de3-2eac-454e-8383-325acbacd90d" xlink:to="loc_us-gaap_ResearchAndDevelopmentExpense_d9d234e2-ea54-4a05-a95f-1d6371f50174" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SellingGeneralAndAdministrativeExpense_1b3ddda8-ef72-4d42-82e9-95222d74371c" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_SellingGeneralAndAdministrativeExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OperatingExpensesAbstract_42d99de3-2eac-454e-8383-325acbacd90d" xlink:to="loc_us-gaap_SellingGeneralAndAdministrativeExpense_1b3ddda8-ef72-4d42-82e9-95222d74371c" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingExpenses_49069e07-dbea-45fa-97ec-16607c38c29d" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OperatingExpenses"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OperatingExpensesAbstract_42d99de3-2eac-454e-8383-325acbacd90d" xlink:to="loc_us-gaap_OperatingExpenses_49069e07-dbea-45fa-97ec-16607c38c29d" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingIncomeLoss_7657de1a-0874-4486-92fd-65b437a0b33e" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OperatingIncomeLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_bc025f42-766b-48e8-a875-8d66629d0462" xlink:to="loc_us-gaap_OperatingIncomeLoss_7657de1a-0874-4486-92fd-65b437a0b33e" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherNonoperatingIncomeExpense_aed716ac-1f2f-437d-885f-e917d5802949" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OtherNonoperatingIncomeExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_bc025f42-766b-48e8-a875-8d66629d0462" xlink:to="loc_us-gaap_OtherNonoperatingIncomeExpense_aed716ac-1f2f-437d-885f-e917d5802949" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments_bac4c228-7b6d-4543-8ce5-636ed7f560a6" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_bc025f42-766b-48e8-a875-8d66629d0462" xlink:to="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments_bac4c228-7b6d-4543-8ce5-636ed7f560a6" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxExpenseBenefit_ef54bcc6-bb00-4d15-93e4-e9bb36c41cae" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_IncomeTaxExpenseBenefit"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_bc025f42-766b-48e8-a875-8d66629d0462" xlink:to="loc_us-gaap_IncomeTaxExpenseBenefit_ef54bcc6-bb00-4d15-93e4-e9bb36c41cae" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromEquityMethodInvestments_f4a7c148-142d-4624-ab08-b223e324c77a" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_IncomeLossFromEquityMethodInvestments"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_bc025f42-766b-48e8-a875-8d66629d0462" xlink:to="loc_us-gaap_IncomeLossFromEquityMethodInvestments_f4a7c148-142d-4624-ab08-b223e324c77a" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProfitLoss_7fa62b8f-96c3-45b2-8430-1ccbdaacfebc" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ProfitLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_bc025f42-766b-48e8-a875-8d66629d0462" xlink:to="loc_us-gaap_ProfitLoss_7fa62b8f-96c3-45b2-8430-1ccbdaacfebc" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLossAttributableToNoncontrollingInterest_e34cae07-4cbe-4dc8-8ee0-ae9377d7e4f0" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_NetIncomeLossAttributableToNoncontrollingInterest"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_bc025f42-766b-48e8-a875-8d66629d0462" xlink:to="loc_us-gaap_NetIncomeLossAttributableToNoncontrollingInterest_e34cae07-4cbe-4dc8-8ee0-ae9377d7e4f0" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLoss_0c6c5014-85a8-4537-a9c8-388760545883" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_NetIncomeLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_bc025f42-766b-48e8-a875-8d66629d0462" xlink:to="loc_us-gaap_NetIncomeLoss_0c6c5014-85a8-4537-a9c8-388760545883" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EarningsPerShareReconciliationAbstract_bb194d06-ad39-4322-b93f-17533a25a9df" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_EarningsPerShareReconciliationAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_bc025f42-766b-48e8-a875-8d66629d0462" xlink:to="loc_us-gaap_EarningsPerShareReconciliationAbstract_bb194d06-ad39-4322-b93f-17533a25a9df" xlink:type="arc" order="12"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EarningsPerShareBasic_fc0da187-4883-4ce4-9a08-aa4e4637b347" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_EarningsPerShareBasic"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EarningsPerShareReconciliationAbstract_bb194d06-ad39-4322-b93f-17533a25a9df" xlink:to="loc_us-gaap_EarningsPerShareBasic_fc0da187-4883-4ce4-9a08-aa4e4637b347" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EarningsPerShareDiluted_25236a94-5709-4791-8c07-878922899149" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_EarningsPerShareDiluted"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EarningsPerShareReconciliationAbstract_bb194d06-ad39-4322-b93f-17533a25a9df" xlink:to="loc_us-gaap_EarningsPerShareDiluted_25236a94-5709-4791-8c07-878922899149" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingDilutedDisclosureItemsAbstract_7688f3b2-f8e8-4a5e-9e6b-b66e7a2707fd" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_WeightedAverageNumberOfSharesOutstandingDilutedDisclosureItemsAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_bc025f42-766b-48e8-a875-8d66629d0462" xlink:to="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingDilutedDisclosureItemsAbstract_7688f3b2-f8e8-4a5e-9e6b-b66e7a2707fd" xlink:type="arc" order="13"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_641ea24e-5d6a-4e8e-9d07-021f43394990" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_WeightedAverageNumberOfSharesOutstandingBasic"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingDilutedDisclosureItemsAbstract_7688f3b2-f8e8-4a5e-9e6b-b66e7a2707fd" xlink:to="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_641ea24e-5d6a-4e8e-9d07-021f43394990" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_503b03a6-4fca-4199-b1e2-b981793b5fea" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingDilutedDisclosureItemsAbstract_7688f3b2-f8e8-4a5e-9e6b-b66e7a2707fd" xlink:to="loc_us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_503b03a6-4fca-4199-b1e2-b981793b5fea" xlink:type="arc" order="2"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.symbotic.com/role/UnauditedCondensedConsolidatedStatementsofChangesinEquityDeficit" xlink:type="simple" xlink:href="sym-20250329.xsd#UnauditedCondensedConsolidatedStatementsofChangesinEquityDeficit"/>
  <link:definitionLink xlink:role="http://www.symbotic.com/role/UnauditedCondensedConsolidatedStatementsofChangesinEquityDeficit" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementLineItems_0ed465ce-2aad-450c-820e-5453835f18b5" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_StatementLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementTable_d7ef174e-4f20-4602-8398-5422f60bf394" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_StatementTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_StatementLineItems_0ed465ce-2aad-450c-820e-5453835f18b5" xlink:to="loc_us-gaap_StatementTable_d7ef174e-4f20-4602-8398-5422f60bf394" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementEquityComponentsAxis_f5a5bb65-547b-4fdb-b22f-01f0af0c325b" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_StatementEquityComponentsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_d7ef174e-4f20-4602-8398-5422f60bf394" xlink:to="loc_us-gaap_StatementEquityComponentsAxis_f5a5bb65-547b-4fdb-b22f-01f0af0c325b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityComponentDomain_f5a5bb65-547b-4fdb-b22f-01f0af0c325b_default" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_EquityComponentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_f5a5bb65-547b-4fdb-b22f-01f0af0c325b" xlink:to="loc_us-gaap_EquityComponentDomain_f5a5bb65-547b-4fdb-b22f-01f0af0c325b_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityComponentDomain_fef2eb98-cf87-4ef3-bbc3-b1dd3d197277" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_EquityComponentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_f5a5bb65-547b-4fdb-b22f-01f0af0c325b" xlink:to="loc_us-gaap_EquityComponentDomain_fef2eb98-cf87-4ef3-bbc3-b1dd3d197277" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockMember_33dbe0b4-83fe-427e-bd46-07a9ae86a620" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_CommonStockMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_fef2eb98-cf87-4ef3-bbc3-b1dd3d197277" xlink:to="loc_us-gaap_CommonStockMember_33dbe0b4-83fe-427e-bd46-07a9ae86a620" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherAdditionalCapitalMember_09e16da3-7f29-4f63-aff8-c6f2f6c5baf8" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OtherAdditionalCapitalMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_fef2eb98-cf87-4ef3-bbc3-b1dd3d197277" xlink:to="loc_us-gaap_OtherAdditionalCapitalMember_09e16da3-7f29-4f63-aff8-c6f2f6c5baf8" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AdditionalPaidInCapitalMember_62d321dc-e231-499e-9562-88a1fa9beb85" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_AdditionalPaidInCapitalMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_fef2eb98-cf87-4ef3-bbc3-b1dd3d197277" xlink:to="loc_us-gaap_AdditionalPaidInCapitalMember_62d321dc-e231-499e-9562-88a1fa9beb85" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeMember_42779cdb-9439-490d-8183-5c60a046bed5" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_fef2eb98-cf87-4ef3-bbc3-b1dd3d197277" xlink:to="loc_us-gaap_AccumulatedOtherComprehensiveIncomeMember_42779cdb-9439-490d-8183-5c60a046bed5" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetainedEarningsMember_5ca5ebf4-f684-4c6b-b186-4155b1716e2d" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_RetainedEarningsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_fef2eb98-cf87-4ef3-bbc3-b1dd3d197277" xlink:to="loc_us-gaap_RetainedEarningsMember_5ca5ebf4-f684-4c6b-b186-4155b1716e2d" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NoncontrollingInterestMember_0669dd32-4cac-4b93-84e8-201c11135aa5" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_NoncontrollingInterestMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_fef2eb98-cf87-4ef3-bbc3-b1dd3d197277" xlink:to="loc_us-gaap_NoncontrollingInterestMember_0669dd32-4cac-4b93-84e8-201c11135aa5" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementClassOfStockAxis_70dc043c-0f4a-484d-a61e-3ef664032f3f" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_StatementClassOfStockAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_d7ef174e-4f20-4602-8398-5422f60bf394" xlink:to="loc_us-gaap_StatementClassOfStockAxis_70dc043c-0f4a-484d-a61e-3ef664032f3f" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ClassOfStockDomain_70dc043c-0f4a-484d-a61e-3ef664032f3f_default" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ClassOfStockDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementClassOfStockAxis_70dc043c-0f4a-484d-a61e-3ef664032f3f" xlink:to="loc_us-gaap_ClassOfStockDomain_70dc043c-0f4a-484d-a61e-3ef664032f3f_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ClassOfStockDomain_1c5e19c1-45cb-45d5-b887-44aea47f0ad9" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ClassOfStockDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementClassOfStockAxis_70dc043c-0f4a-484d-a61e-3ef664032f3f" xlink:to="loc_us-gaap_ClassOfStockDomain_1c5e19c1-45cb-45d5-b887-44aea47f0ad9" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonClassAMember_eace6928-bc15-456a-85c9-a46106c4be58" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_CommonClassAMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockDomain_1c5e19c1-45cb-45d5-b887-44aea47f0ad9" xlink:to="loc_us-gaap_CommonClassAMember_eace6928-bc15-456a-85c9-a46106c4be58" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_sym_CommonClassV1Member_616cc8d8-f011-497f-aabd-a7d3767efbac" xlink:href="sym-20250329.xsd#sym_CommonClassV1Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockDomain_1c5e19c1-45cb-45d5-b887-44aea47f0ad9" xlink:to="loc_sym_CommonClassV1Member_616cc8d8-f011-497f-aabd-a7d3767efbac" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_sym_CommonClassV3Member_cef4706f-6776-413e-ae57-2f6202219103" xlink:href="sym-20250329.xsd#sym_CommonClassV3Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockDomain_1c5e19c1-45cb-45d5-b887-44aea47f0ad9" xlink:to="loc_sym_CommonClassV3Member_cef4706f-6776-413e-ae57-2f6202219103" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_9228408e-90c9-468a-98ac-2cafaa11b5b8" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_IncreaseDecreaseInStockholdersEquityRollForward"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_0ed465ce-2aad-450c-820e-5453835f18b5" xlink:to="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_9228408e-90c9-468a-98ac-2cafaa11b5b8" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SharesOutstanding_0663b031-eedd-4456-a7bb-48bfc067c593" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_SharesOutstanding"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_9228408e-90c9-468a-98ac-2cafaa11b5b8" xlink:to="loc_us-gaap_SharesOutstanding_0663b031-eedd-4456-a7bb-48bfc067c593" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_626ba722-82d4-4c86-937c-d69ac2a5f641" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_9228408e-90c9-468a-98ac-2cafaa11b5b8" xlink:to="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_626ba722-82d4-4c86-937c-d69ac2a5f641" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProfitLoss_1357f358-2106-408a-9161-fe458f9a8b46" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ProfitLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_9228408e-90c9-468a-98ac-2cafaa11b5b8" xlink:to="loc_us-gaap_ProfitLoss_1357f358-2106-408a-9161-fe458f9a8b46" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockIssuedDuringPeriodSharesShareBasedCompensation_cdaeb7da-766a-4c36-ad07-1c9dc73a6242" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_StockIssuedDuringPeriodSharesShareBasedCompensation"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_9228408e-90c9-468a-98ac-2cafaa11b5b8" xlink:to="loc_us-gaap_StockIssuedDuringPeriodSharesShareBasedCompensation_cdaeb7da-766a-4c36-ad07-1c9dc73a6242" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockIssuedDuringPeriodValueShareBasedCompensation_01c2d846-fdb7-492f-bf40-0ae38c1d21a1" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_StockIssuedDuringPeriodValueShareBasedCompensation"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_9228408e-90c9-468a-98ac-2cafaa11b5b8" xlink:to="loc_us-gaap_StockIssuedDuringPeriodValueShareBasedCompensation_01c2d846-fdb7-492f-bf40-0ae38c1d21a1" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockIssuedDuringPeriodSharesEmployeeStockPurchasePlans_e5a3e5b8-bff9-49fd-81ff-b90b42b581f0" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_StockIssuedDuringPeriodSharesEmployeeStockPurchasePlans"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_9228408e-90c9-468a-98ac-2cafaa11b5b8" xlink:to="loc_us-gaap_StockIssuedDuringPeriodSharesEmployeeStockPurchasePlans_e5a3e5b8-bff9-49fd-81ff-b90b42b581f0" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockIssuedDuringPeriodValueEmployeeStockPurchasePlan_f2b5fd6f-1593-41ef-9589-4203aff05648" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_StockIssuedDuringPeriodValueEmployeeStockPurchasePlan"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_9228408e-90c9-468a-98ac-2cafaa11b5b8" xlink:to="loc_us-gaap_StockIssuedDuringPeriodValueEmployeeStockPurchasePlan_f2b5fd6f-1593-41ef-9589-4203aff05648" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_sym_StockIssuedDuringPeriodSharesExchangeOfCommonStock_b3fbdc29-0e84-47c0-a2e8-05aea9ac6092" xlink:href="sym-20250329.xsd#sym_StockIssuedDuringPeriodSharesExchangeOfCommonStock"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_9228408e-90c9-468a-98ac-2cafaa11b5b8" xlink:to="loc_sym_StockIssuedDuringPeriodSharesExchangeOfCommonStock_b3fbdc29-0e84-47c0-a2e8-05aea9ac6092" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_sym_StockIssuedDuringPeriodValueExchangeOfCommonStock_ca3724ef-a9cf-426e-9745-baa8eab875e7" xlink:href="sym-20250329.xsd#sym_StockIssuedDuringPeriodValueExchangeOfCommonStock"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_9228408e-90c9-468a-98ac-2cafaa11b5b8" xlink:to="loc_sym_StockIssuedDuringPeriodValueExchangeOfCommonStock_ca3724ef-a9cf-426e-9745-baa8eab875e7" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockRepurchasedAndRetiredDuringPeriodShares_ab269c1e-9cb4-4dd0-92e3-781748f077ae" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_StockRepurchasedAndRetiredDuringPeriodShares"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_9228408e-90c9-468a-98ac-2cafaa11b5b8" xlink:to="loc_us-gaap_StockRepurchasedAndRetiredDuringPeriodShares_ab269c1e-9cb4-4dd0-92e3-781748f077ae" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders_93339521-8c94-4180-979a-e11414f8c036" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_9228408e-90c9-468a-98ac-2cafaa11b5b8" xlink:to="loc_us-gaap_MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders_93339521-8c94-4180-979a-e11414f8c036" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockIssuedDuringPeriodSharesNewIssues_c47b3637-3a09-4d32-9819-e24c137fc2e8" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_StockIssuedDuringPeriodSharesNewIssues"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_9228408e-90c9-468a-98ac-2cafaa11b5b8" xlink:to="loc_us-gaap_StockIssuedDuringPeriodSharesNewIssues_c47b3637-3a09-4d32-9819-e24c137fc2e8" xlink:type="arc" order="12"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockIssuedDuringPeriodValueNewIssues_77e07858-e7ba-421e-917b-45392211969f" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_StockIssuedDuringPeriodValueNewIssues"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_9228408e-90c9-468a-98ac-2cafaa11b5b8" xlink:to="loc_us-gaap_StockIssuedDuringPeriodValueNewIssues_77e07858-e7ba-421e-917b-45392211969f" xlink:type="arc" order="13"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockIssuedDuringPeriodSharesConversionOfConvertibleSecurities_dc17c74b-60f5-4175-ac5c-e45915aa81c8" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_StockIssuedDuringPeriodSharesConversionOfConvertibleSecurities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_9228408e-90c9-468a-98ac-2cafaa11b5b8" xlink:to="loc_us-gaap_StockIssuedDuringPeriodSharesConversionOfConvertibleSecurities_dc17c74b-60f5-4175-ac5c-e45915aa81c8" xlink:type="arc" order="14"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockIssuedDuringPeriodValueConversionOfConvertibleSecurities_0e9311fb-accb-4b02-9d96-fca3931aae85" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_StockIssuedDuringPeriodValueConversionOfConvertibleSecurities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_9228408e-90c9-468a-98ac-2cafaa11b5b8" xlink:to="loc_us-gaap_StockIssuedDuringPeriodValueConversionOfConvertibleSecurities_0e9311fb-accb-4b02-9d96-fca3931aae85" xlink:type="arc" order="15"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue_ba99afc7-cfd8-412e-a3a0-04ed786cf8b9" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_9228408e-90c9-468a-98ac-2cafaa11b5b8" xlink:to="loc_us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue_ba99afc7-cfd8-412e-a3a0-04ed786cf8b9" xlink:type="arc" order="16"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTax_9b804252-8455-460c-b46a-71f6ea383bd5" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OtherComprehensiveIncomeLossNetOfTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_9228408e-90c9-468a-98ac-2cafaa11b5b8" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTax_9b804252-8455-460c-b46a-71f6ea383bd5" xlink:type="arc" order="17"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SharesOutstanding_af8c4e88-fe37-450e-b97e-a52c8872a5b3" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_SharesOutstanding"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_922874aa-76e5-46d5-af59-5b730f34a3a6" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.symbotic.com/role/SummaryofSignificantAccountingPoliciesNarrativeDetails" xlink:type="simple" xlink:href="sym-20250329.xsd#SummaryofSignificantAccountingPoliciesNarrativeDetails"/>
  <link:definitionLink xlink:role="http://www.symbotic.com/role/SummaryofSignificantAccountingPoliciesNarrativeDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProductInformationLineItems_e6101409-a475-4a21-844a-2b0814e7a1c6" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ProductInformationLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfProductInformationTable_e422c49a-4ce0-4420-81fc-71ba07c3b020" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ScheduleOfProductInformationTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ProductInformationLineItems_e6101409-a475-4a21-844a-2b0814e7a1c6" xlink:to="loc_us-gaap_ScheduleOfProductInformationTable_e422c49a-4ce0-4420-81fc-71ba07c3b020" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MajorCustomersAxis_484effcb-94c0-4468-b626-91025434e8db" xlink:href="https://xbrl.fasb.org/srt/2024/elts/srt-2024.xsd#srt_MajorCustomersAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfProductInformationTable_e422c49a-4ce0-4420-81fc-71ba07c3b020" xlink:to="loc_srt_MajorCustomersAxis_484effcb-94c0-4468-b626-91025434e8db" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_NameOfMajorCustomerDomain_484effcb-94c0-4468-b626-91025434e8db_default" xlink:href="https://xbrl.fasb.org/srt/2024/elts/srt-2024.xsd#srt_NameOfMajorCustomerDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_MajorCustomersAxis_484effcb-94c0-4468-b626-91025434e8db" xlink:to="loc_srt_NameOfMajorCustomerDomain_484effcb-94c0-4468-b626-91025434e8db_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_NameOfMajorCustomerDomain_5f6c3d5d-dbcc-477c-b312-d2c62b89a7b2" xlink:href="https://xbrl.fasb.org/srt/2024/elts/srt-2024.xsd#srt_NameOfMajorCustomerDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_MajorCustomersAxis_484effcb-94c0-4468-b626-91025434e8db" xlink:to="loc_srt_NameOfMajorCustomerDomain_5f6c3d5d-dbcc-477c-b312-d2c62b89a7b2" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_sym_OneSupplierMember_e1152b66-a39f-4d0f-92cc-ba1eae197235" xlink:href="sym-20250329.xsd#sym_OneSupplierMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_NameOfMajorCustomerDomain_5f6c3d5d-dbcc-477c-b312-d2c62b89a7b2" xlink:to="loc_sym_OneSupplierMember_e1152b66-a39f-4d0f-92cc-ba1eae197235" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_sym_TwoSuppliersMember_3ea5a44d-cec8-4849-a811-5dc3461f4c8b" xlink:href="sym-20250329.xsd#sym_TwoSuppliersMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_NameOfMajorCustomerDomain_5f6c3d5d-dbcc-477c-b312-d2c62b89a7b2" xlink:to="loc_sym_TwoSuppliersMember_3ea5a44d-cec8-4849-a811-5dc3461f4c8b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConcentrationRiskByBenchmarkAxis_2bc8390f-95e6-4b0a-b6b2-f7b98122523f" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ConcentrationRiskByBenchmarkAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfProductInformationTable_e422c49a-4ce0-4420-81fc-71ba07c3b020" xlink:to="loc_us-gaap_ConcentrationRiskByBenchmarkAxis_2bc8390f-95e6-4b0a-b6b2-f7b98122523f" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConcentrationRiskBenchmarkDomain_2bc8390f-95e6-4b0a-b6b2-f7b98122523f_default" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ConcentrationRiskBenchmarkDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_ConcentrationRiskByBenchmarkAxis_2bc8390f-95e6-4b0a-b6b2-f7b98122523f" xlink:to="loc_us-gaap_ConcentrationRiskBenchmarkDomain_2bc8390f-95e6-4b0a-b6b2-f7b98122523f_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConcentrationRiskBenchmarkDomain_eb2a7834-b347-45f3-8630-35024ae92d52" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ConcentrationRiskBenchmarkDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_ConcentrationRiskByBenchmarkAxis_2bc8390f-95e6-4b0a-b6b2-f7b98122523f" xlink:to="loc_us-gaap_ConcentrationRiskBenchmarkDomain_eb2a7834-b347-45f3-8630-35024ae92d52" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CostOfGoodsTotalMember_8f0b9ff3-db00-4deb-a81e-c7c61e76176e" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_CostOfGoodsTotalMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ConcentrationRiskBenchmarkDomain_eb2a7834-b347-45f3-8630-35024ae92d52" xlink:to="loc_us-gaap_CostOfGoodsTotalMember_8f0b9ff3-db00-4deb-a81e-c7c61e76176e" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConcentrationRiskByTypeAxis_7fe2a171-ec38-4631-a304-0024a0ff9d21" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ConcentrationRiskByTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfProductInformationTable_e422c49a-4ce0-4420-81fc-71ba07c3b020" xlink:to="loc_us-gaap_ConcentrationRiskByTypeAxis_7fe2a171-ec38-4631-a304-0024a0ff9d21" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConcentrationRiskTypeDomain_7fe2a171-ec38-4631-a304-0024a0ff9d21_default" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ConcentrationRiskTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_ConcentrationRiskByTypeAxis_7fe2a171-ec38-4631-a304-0024a0ff9d21" xlink:to="loc_us-gaap_ConcentrationRiskTypeDomain_7fe2a171-ec38-4631-a304-0024a0ff9d21_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConcentrationRiskTypeDomain_e3667cda-4674-46bf-b5c6-9a71bfa3fa11" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ConcentrationRiskTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_ConcentrationRiskByTypeAxis_7fe2a171-ec38-4631-a304-0024a0ff9d21" xlink:to="loc_us-gaap_ConcentrationRiskTypeDomain_e3667cda-4674-46bf-b5c6-9a71bfa3fa11" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SupplierConcentrationRiskMember_3dd1cd9a-ea2d-4d7c-9895-376cacd8ff15" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_SupplierConcentrationRiskMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ConcentrationRiskTypeDomain_e3667cda-4674-46bf-b5c6-9a71bfa3fa11" xlink:to="loc_us-gaap_SupplierConcentrationRiskMember_3dd1cd9a-ea2d-4d7c-9895-376cacd8ff15" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NumberOfOperatingSegments_bc922ce4-f43c-4b6d-9868-ff5cb4c266ca" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_NumberOfOperatingSegments"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ProductInformationLineItems_e6101409-a475-4a21-844a-2b0814e7a1c6" xlink:to="loc_us-gaap_NumberOfOperatingSegments_bc922ce4-f43c-4b6d-9868-ff5cb4c266ca" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NumberOfReportingUnits_792a7a6f-4ccc-48d1-afd6-729a79b80cc2" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_NumberOfReportingUnits"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ProductInformationLineItems_e6101409-a475-4a21-844a-2b0814e7a1c6" xlink:to="loc_us-gaap_NumberOfReportingUnits_792a7a6f-4ccc-48d1-afd6-729a79b80cc2" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_sym_ConcentrationRiskAmount_9b622435-f46b-4ad0-89c5-8e69e2985256" xlink:href="sym-20250329.xsd#sym_ConcentrationRiskAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ProductInformationLineItems_e6101409-a475-4a21-844a-2b0814e7a1c6" xlink:to="loc_sym_ConcentrationRiskAmount_9b622435-f46b-4ad0-89c5-8e69e2985256" xlink:type="arc" order="2"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.symbotic.com/role/SummaryofSignificantAccountingPoliciesScheduleofCashandCashEquivalentsandRestrictedCashDetails" xlink:type="simple" xlink:href="sym-20250329.xsd#SummaryofSignificantAccountingPoliciesScheduleofCashandCashEquivalentsandRestrictedCashDetails"/>
  <link:definitionLink xlink:role="http://www.symbotic.com/role/SummaryofSignificantAccountingPoliciesScheduleofCashandCashEquivalentsandRestrictedCashDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProductInformationLineItems_bb8dec42-dd90-4ca9-a22c-d3c7c2d31f89" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ProductInformationLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfProductInformationTable_2838337c-5f7f-4cd6-a973-c297a75c3931" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ScheduleOfProductInformationTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ProductInformationLineItems_bb8dec42-dd90-4ca9-a22c-d3c7c2d31f89" xlink:to="loc_us-gaap_ScheduleOfProductInformationTable_2838337c-5f7f-4cd6-a973-c297a75c3931" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BalanceSheetLocationAxis_bf35fb48-449d-4ee8-866c-cdc6c57be668" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_BalanceSheetLocationAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfProductInformationTable_2838337c-5f7f-4cd6-a973-c297a75c3931" xlink:to="loc_us-gaap_BalanceSheetLocationAxis_bf35fb48-449d-4ee8-866c-cdc6c57be668" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BalanceSheetLocationDomain_bf35fb48-449d-4ee8-866c-cdc6c57be668_default" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_BalanceSheetLocationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_BalanceSheetLocationAxis_bf35fb48-449d-4ee8-866c-cdc6c57be668" xlink:to="loc_us-gaap_BalanceSheetLocationDomain_bf35fb48-449d-4ee8-866c-cdc6c57be668_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BalanceSheetLocationDomain_dd72fc91-e99b-4f39-9577-04bcec68c67e" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_BalanceSheetLocationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_BalanceSheetLocationAxis_bf35fb48-449d-4ee8-866c-cdc6c57be668" xlink:to="loc_us-gaap_BalanceSheetLocationDomain_dd72fc91-e99b-4f39-9577-04bcec68c67e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PrepaidExpensesAndOtherCurrentAssetsMember_1cb45019-4a24-4238-9e50-4b5b58fa962e" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_PrepaidExpensesAndOtherCurrentAssetsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BalanceSheetLocationDomain_dd72fc91-e99b-4f39-9577-04bcec68c67e" xlink:to="loc_us-gaap_PrepaidExpensesAndOtherCurrentAssetsMember_1cb45019-4a24-4238-9e50-4b5b58fa962e" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherAssetsMember_f90168d9-72d5-4153-890f-65a0474b24bd" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OtherAssetsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BalanceSheetLocationDomain_dd72fc91-e99b-4f39-9577-04bcec68c67e" xlink:to="loc_us-gaap_OtherAssetsMember_f90168d9-72d5-4153-890f-65a0474b24bd" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_b1acabb2-f838-4580-ae96-033ec64d1aac" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_CashAndCashEquivalentsAtCarryingValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ProductInformationLineItems_bb8dec42-dd90-4ca9-a22c-d3c7c2d31f89" xlink:to="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_b1acabb2-f838-4580-ae96-033ec64d1aac" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestrictedCashAbstract_ab224f0d-ec6a-4893-9e5b-bdaaae4d2bd0" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_RestrictedCashAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ProductInformationLineItems_bb8dec42-dd90-4ca9-a22c-d3c7c2d31f89" xlink:to="loc_us-gaap_RestrictedCashAbstract_ab224f0d-ec6a-4893-9e5b-bdaaae4d2bd0" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestrictedCash_75548023-ddc1-4672-859f-74e34bb43bc3" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_RestrictedCash"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestrictedCashAbstract_ab224f0d-ec6a-4893-9e5b-bdaaae4d2bd0" xlink:to="loc_us-gaap_RestrictedCash_75548023-ddc1-4672-859f-74e34bb43bc3" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_d12e9149-093b-41c6-accc-c012ccd755e4" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ProductInformationLineItems_bb8dec42-dd90-4ca9-a22c-d3c7c2d31f89" xlink:to="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_d12e9149-093b-41c6-accc-c012ccd755e4" xlink:type="arc" order="2"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.symbotic.com/role/NoncontrollingInterestsDetails" xlink:type="simple" xlink:href="sym-20250329.xsd#NoncontrollingInterestsDetails"/>
  <link:definitionLink xlink:role="http://www.symbotic.com/role/NoncontrollingInterestsDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MinorityInterestLineItems_4fc31412-14bc-4e84-9906-924be9804438" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_MinorityInterestLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MinorityInterestTable_b4f4563b-7de3-4d5e-8f9d-0eb5c75a5093" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_MinorityInterestTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_MinorityInterestLineItems_4fc31412-14bc-4e84-9906-924be9804438" xlink:to="loc_us-gaap_MinorityInterestTable_b4f4563b-7de3-4d5e-8f9d-0eb5c75a5093" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementClassOfStockAxis_95aaa81b-56f7-4c1b-bacd-5d6cb197c32c" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_StatementClassOfStockAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_MinorityInterestTable_b4f4563b-7de3-4d5e-8f9d-0eb5c75a5093" xlink:to="loc_us-gaap_StatementClassOfStockAxis_95aaa81b-56f7-4c1b-bacd-5d6cb197c32c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ClassOfStockDomain_95aaa81b-56f7-4c1b-bacd-5d6cb197c32c_default" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ClassOfStockDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementClassOfStockAxis_95aaa81b-56f7-4c1b-bacd-5d6cb197c32c" xlink:to="loc_us-gaap_ClassOfStockDomain_95aaa81b-56f7-4c1b-bacd-5d6cb197c32c_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ClassOfStockDomain_b48165d7-ec59-4cfa-be6f-fb230adee6d8" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ClassOfStockDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementClassOfStockAxis_95aaa81b-56f7-4c1b-bacd-5d6cb197c32c" xlink:to="loc_us-gaap_ClassOfStockDomain_b48165d7-ec59-4cfa-be6f-fb230adee6d8" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonClassAMember_3a1faf21-364b-4b07-b1ff-36e0bf8b2ffe" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_CommonClassAMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockDomain_b48165d7-ec59-4cfa-be6f-fb230adee6d8" xlink:to="loc_us-gaap_CommonClassAMember_3a1faf21-364b-4b07-b1ff-36e0bf8b2ffe" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_sym_CommonClassV1AndV3Member_1f2c2e84-cf58-4d4c-b332-f5c9a932269a" xlink:href="sym-20250329.xsd#sym_CommonClassV1AndV3Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockDomain_b48165d7-ec59-4cfa-be6f-fb230adee6d8" xlink:to="loc_sym_CommonClassV1AndV3Member_1f2c2e84-cf58-4d4c-b332-f5c9a932269a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_OwnershipAxis_13eb0478-a8e9-44c3-8117-d8b88464db1e" xlink:href="https://xbrl.fasb.org/srt/2024/elts/srt-2024.xsd#srt_OwnershipAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_MinorityInterestTable_b4f4563b-7de3-4d5e-8f9d-0eb5c75a5093" xlink:to="loc_srt_OwnershipAxis_13eb0478-a8e9-44c3-8117-d8b88464db1e" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_OwnershipDomain_13eb0478-a8e9-44c3-8117-d8b88464db1e_default" xlink:href="https://xbrl.fasb.org/srt/2024/elts/srt-2024.xsd#srt_OwnershipDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_OwnershipAxis_13eb0478-a8e9-44c3-8117-d8b88464db1e" xlink:to="loc_srt_OwnershipDomain_13eb0478-a8e9-44c3-8117-d8b88464db1e_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_OwnershipDomain_5cee8dcd-f6f8-4126-abed-8292bb7d4dde" xlink:href="https://xbrl.fasb.org/srt/2024/elts/srt-2024.xsd#srt_OwnershipDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_OwnershipAxis_13eb0478-a8e9-44c3-8117-d8b88464db1e" xlink:to="loc_srt_OwnershipDomain_5cee8dcd-f6f8-4126-abed-8292bb7d4dde" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_sym_SymboticIncMember_87102f8f-209e-4e05-bec9-326da14563b9" xlink:href="sym-20250329.xsd#sym_SymboticIncMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_OwnershipDomain_5cee8dcd-f6f8-4126-abed-8292bb7d4dde" xlink:to="loc_sym_SymboticIncMember_87102f8f-209e-4e05-bec9-326da14563b9" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_sym_CommonStockSharesOutstandingRollForward_148f47f5-fcf5-4265-bf73-4bd0d6f20423" xlink:href="sym-20250329.xsd#sym_CommonStockSharesOutstandingRollForward"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_MinorityInterestLineItems_4fc31412-14bc-4e84-9906-924be9804438" xlink:to="loc_sym_CommonStockSharesOutstandingRollForward_148f47f5-fcf5-4265-bf73-4bd0d6f20423" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockSharesOutstanding_4ac6ebfa-ff4b-4da9-a357-d77929179882" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_CommonStockSharesOutstanding"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_sym_CommonStockSharesOutstandingRollForward_148f47f5-fcf5-4265-bf73-4bd0d6f20423" xlink:to="loc_us-gaap_CommonStockSharesOutstanding_4ac6ebfa-ff4b-4da9-a357-d77929179882" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockIssuedDuringPeriodSharesNewIssues_99854de6-7340-4546-a928-9ad5b22e1a31" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_StockIssuedDuringPeriodSharesNewIssues"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_sym_CommonStockSharesOutstandingRollForward_148f47f5-fcf5-4265-bf73-4bd0d6f20423" xlink:to="loc_us-gaap_StockIssuedDuringPeriodSharesNewIssues_99854de6-7340-4546-a928-9ad5b22e1a31" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_sym_StockIssuedDuringPeriodSharesExchangeOfShares_cdbf9713-f31a-49a9-b47a-e6682c2019ea" xlink:href="sym-20250329.xsd#sym_StockIssuedDuringPeriodSharesExchangeOfShares"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_sym_CommonStockSharesOutstandingRollForward_148f47f5-fcf5-4265-bf73-4bd0d6f20423" xlink:to="loc_sym_StockIssuedDuringPeriodSharesExchangeOfShares_cdbf9713-f31a-49a9-b47a-e6682c2019ea" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_sym_StockCancelledDuringPeriodShares_e71e1570-2cf3-4726-b653-089c4b7ebd7e" xlink:href="sym-20250329.xsd#sym_StockCancelledDuringPeriodShares"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_sym_CommonStockSharesOutstandingRollForward_148f47f5-fcf5-4265-bf73-4bd0d6f20423" xlink:to="loc_sym_StockCancelledDuringPeriodShares_e71e1570-2cf3-4726-b653-089c4b7ebd7e" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockSharesOutstanding_bb2a3e4c-7a23-4630-819e-4ac5fd037e6a" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_CommonStockSharesOutstanding"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MinorityInterestOwnershipPercentageByParent_95ae279d-1afc-4b4a-9a13-4f23e2e34312" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_MinorityInterestOwnershipPercentageByParent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_MinorityInterestLineItems_4fc31412-14bc-4e84-9906-924be9804438" xlink:to="loc_us-gaap_MinorityInterestOwnershipPercentageByParent_95ae279d-1afc-4b4a-9a13-4f23e2e34312" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.symbotic.com/role/RevenueNarrativeDetails" xlink:type="simple" xlink:href="sym-20250329.xsd#RevenueNarrativeDetails"/>
  <link:definitionLink xlink:role="http://www.symbotic.com/role/RevenueNarrativeDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionLineItems_7b8fe3a0-508b-42c6-9998-0450ce457f0f" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionTable_94c1fdc4-e9e2-449c-adfd-3859eb9407b1" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionLineItems_7b8fe3a0-508b-42c6-9998-0450ce457f0f" xlink:to="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionTable_94c1fdc4-e9e2-449c-adfd-3859eb9407b1" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionStartDateAxis_cd177e58-8ec2-4a85-bf7a-e618d6006878" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionStartDateAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionTable_94c1fdc4-e9e2-449c-adfd-3859eb9407b1" xlink:to="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionStartDateAxis_cd177e58-8ec2-4a85-bf7a-e618d6006878" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_sym_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionTrancheAxis_47de27c5-79f2-4c72-afbb-97de52cc94a4" xlink:href="sym-20250329.xsd#sym_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionTrancheAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionTable_94c1fdc4-e9e2-449c-adfd-3859eb9407b1" xlink:to="loc_sym_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionTrancheAxis_47de27c5-79f2-4c72-afbb-97de52cc94a4" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_sym_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionTrancheDomain_47de27c5-79f2-4c72-afbb-97de52cc94a4_default" xlink:href="sym-20250329.xsd#sym_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionTrancheDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_sym_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionTrancheAxis_47de27c5-79f2-4c72-afbb-97de52cc94a4" xlink:to="loc_sym_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionTrancheDomain_47de27c5-79f2-4c72-afbb-97de52cc94a4_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_sym_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionTrancheDomain_f8d3a694-70a9-48ef-bb8b-3c8f02fb9f87" xlink:href="sym-20250329.xsd#sym_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionTrancheDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_sym_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionTrancheAxis_47de27c5-79f2-4c72-afbb-97de52cc94a4" xlink:to="loc_sym_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionTrancheDomain_f8d3a694-70a9-48ef-bb8b-3c8f02fb9f87" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_sym_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionTrancheOneMember_d9333f68-790c-446e-83e2-5ead4573343e" xlink:href="sym-20250329.xsd#sym_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionTrancheOneMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_sym_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionTrancheDomain_f8d3a694-70a9-48ef-bb8b-3c8f02fb9f87" xlink:to="loc_sym_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionTrancheOneMember_d9333f68-790c-446e-83e2-5ead4573343e" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_sym_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionTrancheTwoMember_9f7fe005-bd6b-4a6b-be70-8d75bce9bd6a" xlink:href="sym-20250329.xsd#sym_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionTrancheTwoMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_sym_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionTrancheDomain_f8d3a694-70a9-48ef-bb8b-3c8f02fb9f87" xlink:to="loc_sym_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionTrancheTwoMember_9f7fe005-bd6b-4a6b-be70-8d75bce9bd6a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_CounterpartyNameAxis_f890a367-80dd-471c-b76f-5e37ef701e4e" xlink:href="https://xbrl.fasb.org/srt/2024/elts/srt-2024.xsd#srt_CounterpartyNameAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionTable_94c1fdc4-e9e2-449c-adfd-3859eb9407b1" xlink:to="loc_srt_CounterpartyNameAxis_f890a367-80dd-471c-b76f-5e37ef701e4e" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RepurchaseAgreementCounterpartyNameDomain_f890a367-80dd-471c-b76f-5e37ef701e4e_default" xlink:href="https://xbrl.fasb.org/srt/2024/elts/srt-2024.xsd#srt_RepurchaseAgreementCounterpartyNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_CounterpartyNameAxis_f890a367-80dd-471c-b76f-5e37ef701e4e" xlink:to="loc_srt_RepurchaseAgreementCounterpartyNameDomain_f890a367-80dd-471c-b76f-5e37ef701e4e_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RepurchaseAgreementCounterpartyNameDomain_abc05d3d-8d26-46ae-bb5f-96fc294c3d2c" xlink:href="https://xbrl.fasb.org/srt/2024/elts/srt-2024.xsd#srt_RepurchaseAgreementCounterpartyNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_CounterpartyNameAxis_f890a367-80dd-471c-b76f-5e37ef701e4e" xlink:to="loc_srt_RepurchaseAgreementCounterpartyNameDomain_abc05d3d-8d26-46ae-bb5f-96fc294c3d2c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_sym_WalmartMember_132d4225-d20a-4201-8f76-1d83c609e3c9" xlink:href="sym-20250329.xsd#sym_WalmartMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RepurchaseAgreementCounterpartyNameDomain_abc05d3d-8d26-46ae-bb5f-96fc294c3d2c" xlink:to="loc_sym_WalmartMember_132d4225-d20a-4201-8f76-1d83c609e3c9" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeAxis_2d36364f-a408-4c10-ab1e-7e124304b797" xlink:href="https://xbrl.fasb.org/srt/2024/elts/srt-2024.xsd#srt_RangeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionTable_94c1fdc4-e9e2-449c-adfd-3859eb9407b1" xlink:to="loc_srt_RangeAxis_2d36364f-a408-4c10-ab1e-7e124304b797" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_2d36364f-a408-4c10-ab1e-7e124304b797_default" xlink:href="https://xbrl.fasb.org/srt/2024/elts/srt-2024.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_RangeAxis_2d36364f-a408-4c10-ab1e-7e124304b797" xlink:to="loc_srt_RangeMember_2d36364f-a408-4c10-ab1e-7e124304b797_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_de3bf4f8-b5df-46e4-bae3-b4884bbd9690" xlink:href="https://xbrl.fasb.org/srt/2024/elts/srt-2024.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_RangeAxis_2d36364f-a408-4c10-ab1e-7e124304b797" xlink:to="loc_srt_RangeMember_de3bf4f8-b5df-46e4-bae3-b4884bbd9690" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MinimumMember_e995c683-a21e-4d55-b536-f19cece8c62d" xlink:href="https://xbrl.fasb.org/srt/2024/elts/srt-2024.xsd#srt_MinimumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_de3bf4f8-b5df-46e4-bae3-b4884bbd9690" xlink:to="loc_srt_MinimumMember_e995c683-a21e-4d55-b536-f19cece8c62d" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MaximumMember_6009319a-095d-44e7-b2b1-d869e3c1bd47" xlink:href="https://xbrl.fasb.org/srt/2024/elts/srt-2024.xsd#srt_MaximumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_de3bf4f8-b5df-46e4-bae3-b4884bbd9690" xlink:to="loc_srt_MaximumMember_6009319a-095d-44e7-b2b1-d869e3c1bd47" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ContractWithCustomerLiabilityRevenueRecognized_9ab2b3da-5259-4773-9916-4bc280d8d0f9" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ContractWithCustomerLiabilityRevenueRecognized"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionLineItems_7b8fe3a0-508b-42c6-9998-0450ce457f0f" xlink:to="loc_us-gaap_ContractWithCustomerLiabilityRevenueRecognized_9ab2b3da-5259-4773-9916-4bc280d8d0f9" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueRemainingPerformanceObligation_836df374-28fc-4fea-bf6a-78c0e60753aa" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_RevenueRemainingPerformanceObligation"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionLineItems_7b8fe3a0-508b-42c6-9998-0450ce457f0f" xlink:to="loc_us-gaap_RevenueRemainingPerformanceObligation_836df374-28fc-4fea-bf6a-78c0e60753aa" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_sym_NumberOfDistributionCenters_de1f625d-b236-496f-85a1-330dc09e0e9c" xlink:href="sym-20250329.xsd#sym_NumberOfDistributionCenters"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionLineItems_7b8fe3a0-508b-42c6-9998-0450ce457f0f" xlink:to="loc_sym_NumberOfDistributionCenters_de1f625d-b236-496f-85a1-330dc09e0e9c" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_sym_NumberOfAcceleratedPickupAndDeliverySystemPurchases_52884a5d-77f4-4e2b-b46a-b31532e81935" xlink:href="sym-20250329.xsd#sym_NumberOfAcceleratedPickupAndDeliverySystemPurchases"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionLineItems_7b8fe3a0-508b-42c6-9998-0450ce457f0f" xlink:to="loc_sym_NumberOfAcceleratedPickupAndDeliverySystemPurchases_52884a5d-77f4-4e2b-b46a-b31532e81935" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_sym_RevenueRemainingPerformanceObligationRangeOfOutcomesIncreaseAmount_6ef65c16-2851-4ce9-ad9d-678b64757a1f" xlink:href="sym-20250329.xsd#sym_RevenueRemainingPerformanceObligationRangeOfOutcomesIncreaseAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionLineItems_7b8fe3a0-508b-42c6-9998-0450ce457f0f" xlink:to="loc_sym_RevenueRemainingPerformanceObligationRangeOfOutcomesIncreaseAmount_6ef65c16-2851-4ce9-ad9d-678b64757a1f" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueRemainingPerformanceObligationPercentage_f899e261-d6bd-4c5c-9410-f375b40066f3" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_RevenueRemainingPerformanceObligationPercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionLineItems_7b8fe3a0-508b-42c6-9998-0450ce457f0f" xlink:to="loc_us-gaap_RevenueRemainingPerformanceObligationPercentage_f899e261-d6bd-4c5c-9410-f375b40066f3" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionPeriod1_ff61488e-4006-403c-8a45-8af087f5d9ca" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionPeriod1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionLineItems_7b8fe3a0-508b-42c6-9998-0450ce457f0f" xlink:to="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionPeriod1_ff61488e-4006-403c-8a45-8af087f5d9ca" xlink:type="arc" order="6"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.symbotic.com/role/RevenueNarrativeDetails_1" xlink:type="simple" xlink:href="sym-20250329.xsd#RevenueNarrativeDetails_1"/>
  <link:definitionLink xlink:role="http://www.symbotic.com/role/RevenueNarrativeDetails_1" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionLineItems_7b8fe3a0-508b-42c6-9998-0450ce457f0f" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionTable_94c1fdc4-e9e2-449c-adfd-3859eb9407b1" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionLineItems_7b8fe3a0-508b-42c6-9998-0450ce457f0f" xlink:to="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionTable_94c1fdc4-e9e2-449c-adfd-3859eb9407b1" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_sym_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionTrancheAxis_47de27c5-79f2-4c72-afbb-97de52cc94a4" xlink:href="sym-20250329.xsd#sym_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionTrancheAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionTable_94c1fdc4-e9e2-449c-adfd-3859eb9407b1" xlink:to="loc_sym_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionTrancheAxis_47de27c5-79f2-4c72-afbb-97de52cc94a4" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_sym_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionTrancheDomain_47de27c5-79f2-4c72-afbb-97de52cc94a4_default" xlink:href="sym-20250329.xsd#sym_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionTrancheDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_sym_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionTrancheAxis_47de27c5-79f2-4c72-afbb-97de52cc94a4" xlink:to="loc_sym_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionTrancheDomain_47de27c5-79f2-4c72-afbb-97de52cc94a4_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_sym_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionTrancheDomain_f8d3a694-70a9-48ef-bb8b-3c8f02fb9f87" xlink:href="sym-20250329.xsd#sym_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionTrancheDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_sym_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionTrancheAxis_47de27c5-79f2-4c72-afbb-97de52cc94a4" xlink:to="loc_sym_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionTrancheDomain_f8d3a694-70a9-48ef-bb8b-3c8f02fb9f87" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_sym_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionTrancheOneMember_d9333f68-790c-446e-83e2-5ead4573343e" xlink:href="sym-20250329.xsd#sym_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionTrancheOneMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_sym_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionTrancheDomain_f8d3a694-70a9-48ef-bb8b-3c8f02fb9f87" xlink:to="loc_sym_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionTrancheOneMember_d9333f68-790c-446e-83e2-5ead4573343e" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_sym_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionTrancheTwoMember_9f7fe005-bd6b-4a6b-be70-8d75bce9bd6a" xlink:href="sym-20250329.xsd#sym_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionTrancheTwoMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_sym_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionTrancheDomain_f8d3a694-70a9-48ef-bb8b-3c8f02fb9f87" xlink:to="loc_sym_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionTrancheTwoMember_9f7fe005-bd6b-4a6b-be70-8d75bce9bd6a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_CounterpartyNameAxis_f890a367-80dd-471c-b76f-5e37ef701e4e" xlink:href="https://xbrl.fasb.org/srt/2024/elts/srt-2024.xsd#srt_CounterpartyNameAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionTable_94c1fdc4-e9e2-449c-adfd-3859eb9407b1" xlink:to="loc_srt_CounterpartyNameAxis_f890a367-80dd-471c-b76f-5e37ef701e4e" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RepurchaseAgreementCounterpartyNameDomain_f890a367-80dd-471c-b76f-5e37ef701e4e_default" xlink:href="https://xbrl.fasb.org/srt/2024/elts/srt-2024.xsd#srt_RepurchaseAgreementCounterpartyNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_CounterpartyNameAxis_f890a367-80dd-471c-b76f-5e37ef701e4e" xlink:to="loc_srt_RepurchaseAgreementCounterpartyNameDomain_f890a367-80dd-471c-b76f-5e37ef701e4e_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RepurchaseAgreementCounterpartyNameDomain_abc05d3d-8d26-46ae-bb5f-96fc294c3d2c" xlink:href="https://xbrl.fasb.org/srt/2024/elts/srt-2024.xsd#srt_RepurchaseAgreementCounterpartyNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_CounterpartyNameAxis_f890a367-80dd-471c-b76f-5e37ef701e4e" xlink:to="loc_srt_RepurchaseAgreementCounterpartyNameDomain_abc05d3d-8d26-46ae-bb5f-96fc294c3d2c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_sym_WalmartMember_132d4225-d20a-4201-8f76-1d83c609e3c9" xlink:href="sym-20250329.xsd#sym_WalmartMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RepurchaseAgreementCounterpartyNameDomain_abc05d3d-8d26-46ae-bb5f-96fc294c3d2c" xlink:to="loc_sym_WalmartMember_132d4225-d20a-4201-8f76-1d83c609e3c9" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeAxis_2d36364f-a408-4c10-ab1e-7e124304b797" xlink:href="https://xbrl.fasb.org/srt/2024/elts/srt-2024.xsd#srt_RangeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionTable_94c1fdc4-e9e2-449c-adfd-3859eb9407b1" xlink:to="loc_srt_RangeAxis_2d36364f-a408-4c10-ab1e-7e124304b797" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_2d36364f-a408-4c10-ab1e-7e124304b797_default" xlink:href="https://xbrl.fasb.org/srt/2024/elts/srt-2024.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_RangeAxis_2d36364f-a408-4c10-ab1e-7e124304b797" xlink:to="loc_srt_RangeMember_2d36364f-a408-4c10-ab1e-7e124304b797_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_de3bf4f8-b5df-46e4-bae3-b4884bbd9690" xlink:href="https://xbrl.fasb.org/srt/2024/elts/srt-2024.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_RangeAxis_2d36364f-a408-4c10-ab1e-7e124304b797" xlink:to="loc_srt_RangeMember_de3bf4f8-b5df-46e4-bae3-b4884bbd9690" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MinimumMember_e995c683-a21e-4d55-b536-f19cece8c62d" xlink:href="https://xbrl.fasb.org/srt/2024/elts/srt-2024.xsd#srt_MinimumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_de3bf4f8-b5df-46e4-bae3-b4884bbd9690" xlink:to="loc_srt_MinimumMember_e995c683-a21e-4d55-b536-f19cece8c62d" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MaximumMember_6009319a-095d-44e7-b2b1-d869e3c1bd47" xlink:href="https://xbrl.fasb.org/srt/2024/elts/srt-2024.xsd#srt_MaximumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_de3bf4f8-b5df-46e4-bae3-b4884bbd9690" xlink:to="loc_srt_MaximumMember_6009319a-095d-44e7-b2b1-d869e3c1bd47" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ContractWithCustomerLiabilityRevenueRecognized_9ab2b3da-5259-4773-9916-4bc280d8d0f9" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ContractWithCustomerLiabilityRevenueRecognized"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionLineItems_7b8fe3a0-508b-42c6-9998-0450ce457f0f" xlink:to="loc_us-gaap_ContractWithCustomerLiabilityRevenueRecognized_9ab2b3da-5259-4773-9916-4bc280d8d0f9" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueRemainingPerformanceObligation_836df374-28fc-4fea-bf6a-78c0e60753aa" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_RevenueRemainingPerformanceObligation"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionLineItems_7b8fe3a0-508b-42c6-9998-0450ce457f0f" xlink:to="loc_us-gaap_RevenueRemainingPerformanceObligation_836df374-28fc-4fea-bf6a-78c0e60753aa" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_sym_NumberOfDistributionCenters_de1f625d-b236-496f-85a1-330dc09e0e9c" xlink:href="sym-20250329.xsd#sym_NumberOfDistributionCenters"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionLineItems_7b8fe3a0-508b-42c6-9998-0450ce457f0f" xlink:to="loc_sym_NumberOfDistributionCenters_de1f625d-b236-496f-85a1-330dc09e0e9c" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_sym_NumberOfAcceleratedPickupAndDeliverySystemPurchases_52884a5d-77f4-4e2b-b46a-b31532e81935" xlink:href="sym-20250329.xsd#sym_NumberOfAcceleratedPickupAndDeliverySystemPurchases"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionLineItems_7b8fe3a0-508b-42c6-9998-0450ce457f0f" xlink:to="loc_sym_NumberOfAcceleratedPickupAndDeliverySystemPurchases_52884a5d-77f4-4e2b-b46a-b31532e81935" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_sym_RevenueRemainingPerformanceObligationRangeOfOutcomesIncreaseAmount_6ef65c16-2851-4ce9-ad9d-678b64757a1f" xlink:href="sym-20250329.xsd#sym_RevenueRemainingPerformanceObligationRangeOfOutcomesIncreaseAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionLineItems_7b8fe3a0-508b-42c6-9998-0450ce457f0f" xlink:to="loc_sym_RevenueRemainingPerformanceObligationRangeOfOutcomesIncreaseAmount_6ef65c16-2851-4ce9-ad9d-678b64757a1f" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueRemainingPerformanceObligationPercentage_f899e261-d6bd-4c5c-9410-f375b40066f3" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_RevenueRemainingPerformanceObligationPercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionLineItems_7b8fe3a0-508b-42c6-9998-0450ce457f0f" xlink:to="loc_us-gaap_RevenueRemainingPerformanceObligationPercentage_f899e261-d6bd-4c5c-9410-f375b40066f3" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionPeriod1_ff61488e-4006-403c-8a45-8af087f5d9ca" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionPeriod1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionLineItems_7b8fe3a0-508b-42c6-9998-0450ce457f0f" xlink:to="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionPeriod1_ff61488e-4006-403c-8a45-8af087f5d9ca" xlink:type="arc" order="6"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.symbotic.com/role/RevenueSchedulesofConcentrationRiskDetails" xlink:type="simple" xlink:href="sym-20250329.xsd#RevenueSchedulesofConcentrationRiskDetails"/>
  <link:definitionLink xlink:role="http://www.symbotic.com/role/RevenueSchedulesofConcentrationRiskDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConcentrationRiskLineItems_ba044851-c5de-4faa-a9a0-c6dbc0be71be" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ConcentrationRiskLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConcentrationRiskTable_03d63ef1-9327-4cab-a649-f418a4d2bfcf" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ConcentrationRiskTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ConcentrationRiskLineItems_ba044851-c5de-4faa-a9a0-c6dbc0be71be" xlink:to="loc_us-gaap_ConcentrationRiskTable_03d63ef1-9327-4cab-a649-f418a4d2bfcf" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConcentrationRiskByTypeAxis_41679ffd-7410-4185-9a06-15b43d5ddf70" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ConcentrationRiskByTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ConcentrationRiskTable_03d63ef1-9327-4cab-a649-f418a4d2bfcf" xlink:to="loc_us-gaap_ConcentrationRiskByTypeAxis_41679ffd-7410-4185-9a06-15b43d5ddf70" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConcentrationRiskTypeDomain_41679ffd-7410-4185-9a06-15b43d5ddf70_default" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ConcentrationRiskTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_ConcentrationRiskByTypeAxis_41679ffd-7410-4185-9a06-15b43d5ddf70" xlink:to="loc_us-gaap_ConcentrationRiskTypeDomain_41679ffd-7410-4185-9a06-15b43d5ddf70_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConcentrationRiskTypeDomain_fee1a20b-0542-4f6a-b881-0e81a3dfaaaa" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ConcentrationRiskTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_ConcentrationRiskByTypeAxis_41679ffd-7410-4185-9a06-15b43d5ddf70" xlink:to="loc_us-gaap_ConcentrationRiskTypeDomain_fee1a20b-0542-4f6a-b881-0e81a3dfaaaa" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CustomerConcentrationRiskMember_1a31c5f9-dd03-44eb-be64-15309dd9d315" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_CustomerConcentrationRiskMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ConcentrationRiskTypeDomain_fee1a20b-0542-4f6a-b881-0e81a3dfaaaa" xlink:to="loc_us-gaap_CustomerConcentrationRiskMember_1a31c5f9-dd03-44eb-be64-15309dd9d315" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConcentrationRiskByBenchmarkAxis_a49b8dfe-1fa8-44c2-821a-a90ccc0d35d3" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ConcentrationRiskByBenchmarkAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ConcentrationRiskTable_03d63ef1-9327-4cab-a649-f418a4d2bfcf" xlink:to="loc_us-gaap_ConcentrationRiskByBenchmarkAxis_a49b8dfe-1fa8-44c2-821a-a90ccc0d35d3" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConcentrationRiskBenchmarkDomain_a49b8dfe-1fa8-44c2-821a-a90ccc0d35d3_default" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ConcentrationRiskBenchmarkDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_ConcentrationRiskByBenchmarkAxis_a49b8dfe-1fa8-44c2-821a-a90ccc0d35d3" xlink:to="loc_us-gaap_ConcentrationRiskBenchmarkDomain_a49b8dfe-1fa8-44c2-821a-a90ccc0d35d3_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConcentrationRiskBenchmarkDomain_f0a69555-a3ff-4ea0-9ac9-60576276854c" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ConcentrationRiskBenchmarkDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_ConcentrationRiskByBenchmarkAxis_a49b8dfe-1fa8-44c2-821a-a90ccc0d35d3" xlink:to="loc_us-gaap_ConcentrationRiskBenchmarkDomain_f0a69555-a3ff-4ea0-9ac9-60576276854c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueFromContractWithCustomerMember_9dd4c987-e4ab-4f7c-a38e-3499631beb0c" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_RevenueFromContractWithCustomerMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ConcentrationRiskBenchmarkDomain_f0a69555-a3ff-4ea0-9ac9-60576276854c" xlink:to="loc_us-gaap_RevenueFromContractWithCustomerMember_9dd4c987-e4ab-4f7c-a38e-3499631beb0c" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountsReceivableMember_e2ac83ae-f89d-4971-ba01-3ff85781a289" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_AccountsReceivableMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ConcentrationRiskBenchmarkDomain_f0a69555-a3ff-4ea0-9ac9-60576276854c" xlink:to="loc_us-gaap_AccountsReceivableMember_e2ac83ae-f89d-4971-ba01-3ff85781a289" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MajorCustomersAxis_488abc8a-1429-4cf7-a0fa-dc1d9b9122cb" xlink:href="https://xbrl.fasb.org/srt/2024/elts/srt-2024.xsd#srt_MajorCustomersAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ConcentrationRiskTable_03d63ef1-9327-4cab-a649-f418a4d2bfcf" xlink:to="loc_srt_MajorCustomersAxis_488abc8a-1429-4cf7-a0fa-dc1d9b9122cb" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_NameOfMajorCustomerDomain_488abc8a-1429-4cf7-a0fa-dc1d9b9122cb_default" xlink:href="https://xbrl.fasb.org/srt/2024/elts/srt-2024.xsd#srt_NameOfMajorCustomerDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_MajorCustomersAxis_488abc8a-1429-4cf7-a0fa-dc1d9b9122cb" xlink:to="loc_srt_NameOfMajorCustomerDomain_488abc8a-1429-4cf7-a0fa-dc1d9b9122cb_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_NameOfMajorCustomerDomain_42be56a9-f98f-4d7c-9c75-a1ce533734df" xlink:href="https://xbrl.fasb.org/srt/2024/elts/srt-2024.xsd#srt_NameOfMajorCustomerDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_MajorCustomersAxis_488abc8a-1429-4cf7-a0fa-dc1d9b9122cb" xlink:to="loc_srt_NameOfMajorCustomerDomain_42be56a9-f98f-4d7c-9c75-a1ce533734df" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_sym_CustomersABAndCMember_40a7abb1-4750-49ea-8d8f-349d9c4a4057" xlink:href="sym-20250329.xsd#sym_CustomersABAndCMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_NameOfMajorCustomerDomain_42be56a9-f98f-4d7c-9c75-a1ce533734df" xlink:to="loc_sym_CustomersABAndCMember_40a7abb1-4750-49ea-8d8f-349d9c4a4057" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_sym_CustomerAMember_4c9837a8-0518-45e2-89af-91a383ede1a0" xlink:href="sym-20250329.xsd#sym_CustomerAMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_sym_CustomersABAndCMember_40a7abb1-4750-49ea-8d8f-349d9c4a4057" xlink:to="loc_sym_CustomerAMember_4c9837a8-0518-45e2-89af-91a383ede1a0" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_sym_CustomerBMember_b03b9b1d-5fc1-477d-8fc3-4258386af0e4" xlink:href="sym-20250329.xsd#sym_CustomerBMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_sym_CustomersABAndCMember_40a7abb1-4750-49ea-8d8f-349d9c4a4057" xlink:to="loc_sym_CustomerBMember_b03b9b1d-5fc1-477d-8fc3-4258386af0e4" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_sym_CustomerCMember_87de15f8-eb5b-4b73-95fa-ce879701dc2e" xlink:href="sym-20250329.xsd#sym_CustomerCMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_sym_CustomersABAndCMember_40a7abb1-4750-49ea-8d8f-349d9c4a4057" xlink:to="loc_sym_CustomerCMember_87de15f8-eb5b-4b73-95fa-ce879701dc2e" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConcentrationRiskPercentage1_1134daef-a35e-404a-bff7-87c2bcff2811" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ConcentrationRiskPercentage1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ConcentrationRiskLineItems_ba044851-c5de-4faa-a9a0-c6dbc0be71be" xlink:to="loc_us-gaap_ConcentrationRiskPercentage1_1134daef-a35e-404a-bff7-87c2bcff2811" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.symbotic.com/role/PropertyandEquipmentScheduleofPropertyandEquipmentDetails" xlink:type="simple" xlink:href="sym-20250329.xsd#PropertyandEquipmentScheduleofPropertyandEquipmentDetails"/>
  <link:definitionLink xlink:role="http://www.symbotic.com/role/PropertyandEquipmentScheduleofPropertyandEquipmentDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentLineItems_82bfce42-6c15-40de-8661-ae0cddd42c0b" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_PropertyPlantAndEquipmentLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfPropertyPlantAndEquipmentTable_18a9f486-0dfb-4312-983c-a8dfbc8bbc3f" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ScheduleOfPropertyPlantAndEquipmentTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentLineItems_82bfce42-6c15-40de-8661-ae0cddd42c0b" xlink:to="loc_us-gaap_ScheduleOfPropertyPlantAndEquipmentTable_18a9f486-0dfb-4312-983c-a8dfbc8bbc3f" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_a5a6a776-30a8-41be-b4b3-ffb8d4f17df8" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_PropertyPlantAndEquipmentByTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfPropertyPlantAndEquipmentTable_18a9f486-0dfb-4312-983c-a8dfbc8bbc3f" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_a5a6a776-30a8-41be-b4b3-ffb8d4f17df8" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_a5a6a776-30a8-41be-b4b3-ffb8d4f17df8_default" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_PropertyPlantAndEquipmentTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_a5a6a776-30a8-41be-b4b3-ffb8d4f17df8" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_a5a6a776-30a8-41be-b4b3-ffb8d4f17df8_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_7a3cc145-90c1-4f52-abfb-293b29971b27" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_PropertyPlantAndEquipmentTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_a5a6a776-30a8-41be-b4b3-ffb8d4f17df8" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_7a3cc145-90c1-4f52-abfb-293b29971b27" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_sym_ComputerEquipmentSoftwareDevelopmentFurnitureAndFixturesTestEquipmentAndOtherEquipmentMember_97ebf3e3-9d80-4f2d-91ea-c69cff76816d" xlink:href="sym-20250329.xsd#sym_ComputerEquipmentSoftwareDevelopmentFurnitureAndFixturesTestEquipmentAndOtherEquipmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_7a3cc145-90c1-4f52-abfb-293b29971b27" xlink:to="loc_sym_ComputerEquipmentSoftwareDevelopmentFurnitureAndFixturesTestEquipmentAndOtherEquipmentMember_97ebf3e3-9d80-4f2d-91ea-c69cff76816d" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SoftwareAndSoftwareDevelopmentCostsMember_d4bca9d3-45a2-4b1a-bacc-43b4ae2f4b90" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_SoftwareAndSoftwareDevelopmentCostsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_7a3cc145-90c1-4f52-abfb-293b29971b27" xlink:to="loc_us-gaap_SoftwareAndSoftwareDevelopmentCostsMember_d4bca9d3-45a2-4b1a-bacc-43b4ae2f4b90" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LeaseholdImprovementsMember_b329e4bd-76eb-4689-b009-6019e7e35df6" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_LeaseholdImprovementsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_7a3cc145-90c1-4f52-abfb-293b29971b27" xlink:to="loc_us-gaap_LeaseholdImprovementsMember_b329e4bd-76eb-4689-b009-6019e7e35df6" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentGross_b5383078-8e6b-49eb-b87d-165d282d736c" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_PropertyPlantAndEquipmentGross"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentLineItems_82bfce42-6c15-40de-8661-ae0cddd42c0b" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentGross_b5383078-8e6b-49eb-b87d-165d282d736c" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment_327f54d3-de3c-4f2e-b1b9-4a48bd25cb0d" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentLineItems_82bfce42-6c15-40de-8661-ae0cddd42c0b" xlink:to="loc_us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment_327f54d3-de3c-4f2e-b1b9-4a48bd25cb0d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentNet_946a7b49-e0e6-47f3-ab56-08e1891c3a69" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_PropertyPlantAndEquipmentNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentLineItems_82bfce42-6c15-40de-8661-ae0cddd42c0b" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentNet_946a7b49-e0e6-47f3-ab56-08e1891c3a69" xlink:type="arc" order="2"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.symbotic.com/role/BusinessAcquisitionsNarrativeDetails" xlink:type="simple" xlink:href="sym-20250329.xsd#BusinessAcquisitionsNarrativeDetails"/>
  <link:definitionLink xlink:role="http://www.symbotic.com/role/BusinessAcquisitionsNarrativeDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetAcquisitionLineItems_58783b8c-e31d-4d21-8e4a-9243fdf23726" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_AssetAcquisitionLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetAcquisitionTable_b5ae9969-814c-451e-b5d1-25f601edb368" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_AssetAcquisitionTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_AssetAcquisitionLineItems_58783b8c-e31d-4d21-8e4a-9243fdf23726" xlink:to="loc_us-gaap_AssetAcquisitionTable_b5ae9969-814c-451e-b5d1-25f601edb368" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAxis_b3c6868e-fffb-4724-9636-f178f720dd67" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_BusinessAcquisitionAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_AssetAcquisitionTable_b5ae9969-814c-451e-b5d1-25f601edb368" xlink:to="loc_us-gaap_BusinessAcquisitionAxis_b3c6868e-fffb-4724-9636-f178f720dd67" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAcquireeDomain_b3c6868e-fffb-4724-9636-f178f720dd67_default" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_BusinessAcquisitionAcquireeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_BusinessAcquisitionAxis_b3c6868e-fffb-4724-9636-f178f720dd67" xlink:to="loc_us-gaap_BusinessAcquisitionAcquireeDomain_b3c6868e-fffb-4724-9636-f178f720dd67_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAcquireeDomain_e22e90b8-6c9f-4439-bd1d-81c0f125b988" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_BusinessAcquisitionAcquireeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_BusinessAcquisitionAxis_b3c6868e-fffb-4724-9636-f178f720dd67" xlink:to="loc_us-gaap_BusinessAcquisitionAcquireeDomain_e22e90b8-6c9f-4439-bd1d-81c0f125b988" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_sym_WalmartAdvancedSystemsRoboticsInc.Member_a4e6730c-578b-46e7-8dab-60af43d217aa" xlink:href="sym-20250329.xsd#sym_WalmartAdvancedSystemsRoboticsInc.Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionAcquireeDomain_e22e90b8-6c9f-4439-bd1d-81c0f125b988" xlink:to="loc_sym_WalmartAdvancedSystemsRoboticsInc.Member_a4e6730c-578b-46e7-8dab-60af43d217aa" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_sym_AdvancedSystemsRoboticsInc.Member_0f755640-899b-40b1-8293-4ef8c87c8b06" xlink:href="sym-20250329.xsd#sym_AdvancedSystemsRoboticsInc.Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionAcquireeDomain_e22e90b8-6c9f-4439-bd1d-81c0f125b988" xlink:to="loc_sym_AdvancedSystemsRoboticsInc.Member_0f755640-899b-40b1-8293-4ef8c87c8b06" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationAcquisitionRelatedCosts_03380fbd-603d-4692-99c4-1426634c3978" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_BusinessCombinationAcquisitionRelatedCosts"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetAcquisitionLineItems_58783b8c-e31d-4d21-8e4a-9243fdf23726" xlink:to="loc_us-gaap_BusinessCombinationAcquisitionRelatedCosts_03380fbd-603d-4692-99c4-1426634c3978" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsToAcquireBusinessesGross_1beae7dc-939f-4986-ba04-fce692235f0e" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_PaymentsToAcquireBusinessesGross"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetAcquisitionLineItems_58783b8c-e31d-4d21-8e4a-9243fdf23726" xlink:to="loc_us-gaap_PaymentsToAcquireBusinessesGross_1beae7dc-939f-4986-ba04-fce692235f0e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinitelivedIntangibleAssetsAcquired1_2667e564-c610-42ef-a98a-4222ee8c0214" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FinitelivedIntangibleAssetsAcquired1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetAcquisitionLineItems_58783b8c-e31d-4d21-8e4a-9243fdf23726" xlink:to="loc_us-gaap_FinitelivedIntangibleAssetsAcquired1_2667e564-c610-42ef-a98a-4222ee8c0214" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AcquiredFiniteLivedIntangibleAssetsWeightedAverageUsefulLife_5ee5b85d-ac8d-4a45-b187-5e97f94dac6d" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_AcquiredFiniteLivedIntangibleAssetsWeightedAverageUsefulLife"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetAcquisitionLineItems_58783b8c-e31d-4d21-8e4a-9243fdf23726" xlink:to="loc_us-gaap_AcquiredFiniteLivedIntangibleAssetsWeightedAverageUsefulLife_5ee5b85d-ac8d-4a45-b187-5e97f94dac6d" xlink:type="arc" order="3"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.symbotic.com/role/BusinessCombinationsScheduleofBusinessAcquisitionsbyAcquisitionDetails" xlink:type="simple" xlink:href="sym-20250329.xsd#BusinessCombinationsScheduleofBusinessAcquisitionsbyAcquisitionDetails"/>
  <link:definitionLink xlink:role="http://www.symbotic.com/role/BusinessCombinationsScheduleofBusinessAcquisitionsbyAcquisitionDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetAcquisitionLineItems_7eca0a0f-053a-46bc-b0a0-d17ed68dbb32" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_AssetAcquisitionLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetAcquisitionTable_8d592f97-9b74-4203-b239-1cd0ade701c3" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_AssetAcquisitionTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_AssetAcquisitionLineItems_7eca0a0f-053a-46bc-b0a0-d17ed68dbb32" xlink:to="loc_us-gaap_AssetAcquisitionTable_8d592f97-9b74-4203-b239-1cd0ade701c3" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAxis_d911ba20-4488-45e5-b29e-86a1280bfffd" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_BusinessAcquisitionAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_AssetAcquisitionTable_8d592f97-9b74-4203-b239-1cd0ade701c3" xlink:to="loc_us-gaap_BusinessAcquisitionAxis_d911ba20-4488-45e5-b29e-86a1280bfffd" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAcquireeDomain_d911ba20-4488-45e5-b29e-86a1280bfffd_default" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_BusinessAcquisitionAcquireeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_BusinessAcquisitionAxis_d911ba20-4488-45e5-b29e-86a1280bfffd" xlink:to="loc_us-gaap_BusinessAcquisitionAcquireeDomain_d911ba20-4488-45e5-b29e-86a1280bfffd_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAcquireeDomain_cc45c0f1-1547-4c2c-8435-7144b804dec4" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_BusinessAcquisitionAcquireeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_BusinessAcquisitionAxis_d911ba20-4488-45e5-b29e-86a1280bfffd" xlink:to="loc_us-gaap_BusinessAcquisitionAcquireeDomain_cc45c0f1-1547-4c2c-8435-7144b804dec4" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_sym_WalmartAdvancedSystemsRoboticsInc.Member_246f7d69-1525-4da1-afc3-dcd608ff4a76" xlink:href="sym-20250329.xsd#sym_WalmartAdvancedSystemsRoboticsInc.Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionAcquireeDomain_cc45c0f1-1547-4c2c-8435-7144b804dec4" xlink:to="loc_sym_WalmartAdvancedSystemsRoboticsInc.Member_246f7d69-1525-4da1-afc3-dcd608ff4a76" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationConsiderationTransferred1_affa7173-ed82-4f70-9987-62d334209db0" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_BusinessCombinationConsiderationTransferred1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetAcquisitionLineItems_7eca0a0f-053a-46bc-b0a0-d17ed68dbb32" xlink:to="loc_us-gaap_BusinessCombinationConsiderationTransferred1_affa7173-ed82-4f70-9987-62d334209db0" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsReceivables_765db4f4-d625-41ce-9f52-7971a37f4e6f" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsReceivables"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetAcquisitionLineItems_7eca0a0f-053a-46bc-b0a0-d17ed68dbb32" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsReceivables_765db4f4-d625-41ce-9f52-7971a37f4e6f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedInventory_04a321a4-f06d-41d9-9479-1c9b8d58c8a4" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedInventory"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetAcquisitionLineItems_7eca0a0f-053a-46bc-b0a0-d17ed68dbb32" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedInventory_04a321a4-f06d-41d9-9479-1c9b8d58c8a4" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsPrepaidExpenseAndOtherAssets_a5c17691-1c2f-4cb4-a3c3-3692f6fd0c2b" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsPrepaidExpenseAndOtherAssets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetAcquisitionLineItems_7eca0a0f-053a-46bc-b0a0-d17ed68dbb32" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsPrepaidExpenseAndOtherAssets_a5c17691-1c2f-4cb4-a3c3-3692f6fd0c2b" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipment_6c0db711-cd71-44c0-bcf6-13e0d57866ef" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipment"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetAcquisitionLineItems_7eca0a0f-053a-46bc-b0a0-d17ed68dbb32" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipment_6c0db711-cd71-44c0-bcf6-13e0d57866ef" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibleAssetsOtherThanGoodwill_a3115d60-b6d3-46d9-904b-0d527714bcab" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibleAssetsOtherThanGoodwill"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetAcquisitionLineItems_7eca0a0f-053a-46bc-b0a0-d17ed68dbb32" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibleAssetsOtherThanGoodwill_a3115d60-b6d3-46d9-904b-0d527714bcab" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsOther_7ecb9dbc-befe-490a-badd-aebfcbc4ab7c" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsOther"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetAcquisitionLineItems_7eca0a0f-053a-46bc-b0a0-d17ed68dbb32" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsOther_7ecb9dbc-befe-490a-badd-aebfcbc4ab7c" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssets_190f6fe2-7178-4682-a4f8-032bb74209ef" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetAcquisitionLineItems_7eca0a0f-053a-46bc-b0a0-d17ed68dbb32" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssets_190f6fe2-7178-4682-a4f8-032bb74209ef" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_sym_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesAccruedExpensesAndOtherCurrentAssets_e9798ca4-ae58-46be-947c-62f71bd464dc" xlink:href="sym-20250329.xsd#sym_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesAccruedExpensesAndOtherCurrentAssets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetAcquisitionLineItems_7eca0a0f-053a-46bc-b0a0-d17ed68dbb32" xlink:to="loc_sym_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesAccruedExpensesAndOtherCurrentAssets_e9798ca4-ae58-46be-947c-62f71bd464dc" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesOther_6bcbb4f2-cc21-4dc7-ba82-eaf8c10ca066" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesOther"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetAcquisitionLineItems_7eca0a0f-053a-46bc-b0a0-d17ed68dbb32" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesOther_6bcbb4f2-cc21-4dc7-ba82-eaf8c10ca066" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilities_98fd9fc2-fd9d-4e56-ab7d-536651c81922" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetAcquisitionLineItems_7eca0a0f-053a-46bc-b0a0-d17ed68dbb32" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilities_98fd9fc2-fd9d-4e56-ab7d-536651c81922" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet_9d3837b9-37c6-4580-a819-748eb32aeae3" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetAcquisitionLineItems_7eca0a0f-053a-46bc-b0a0-d17ed68dbb32" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet_9d3837b9-37c6-4580-a819-748eb32aeae3" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Goodwill_ccfed4a1-c893-4c50-81ea-e575dd15b771" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_Goodwill"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetAcquisitionLineItems_7eca0a0f-053a-46bc-b0a0-d17ed68dbb32" xlink:to="loc_us-gaap_Goodwill_ccfed4a1-c893-4c50-81ea-e575dd15b771" xlink:type="arc" order="12"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedNet_628ff57c-f854-4b73-9b2d-cd90b1b91d9a" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetAcquisitionLineItems_7eca0a0f-053a-46bc-b0a0-d17ed68dbb32" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedNet_628ff57c-f854-4b73-9b2d-cd90b1b91d9a" xlink:type="arc" order="13"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.symbotic.com/role/IntangibleAssetsandGoodwillNarrativeDetails" xlink:type="simple" xlink:href="sym-20250329.xsd#IntangibleAssetsandGoodwillNarrativeDetails"/>
  <link:definitionLink xlink:role="http://www.symbotic.com/role/IntangibleAssetsandGoodwillNarrativeDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_e6faa360-91e9-47e3-8e5c-086a1e9a832e" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FiniteLivedIntangibleAssetsLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable_163103f4-0827-4769-856b-5e24f22a3af6" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_e6faa360-91e9-47e3-8e5c-086a1e9a832e" xlink:to="loc_us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable_163103f4-0827-4769-856b-5e24f22a3af6" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_7dce01d1-cabd-4492-99b8-8f3ff628499f" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable_163103f4-0827-4769-856b-5e24f22a3af6" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_7dce01d1-cabd-4492-99b8-8f3ff628499f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_7dce01d1-cabd-4492-99b8-8f3ff628499f_default" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_7dce01d1-cabd-4492-99b8-8f3ff628499f" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_7dce01d1-cabd-4492-99b8-8f3ff628499f_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_7c1d95ee-9cde-4f9f-b32d-0e640fe627f1" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_7dce01d1-cabd-4492-99b8-8f3ff628499f" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_7c1d95ee-9cde-4f9f-b32d-0e640fe627f1" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DevelopedTechnologyRightsMember_2dad7764-05c2-4737-8528-7648b334d838" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DevelopedTechnologyRightsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_7c1d95ee-9cde-4f9f-b32d-0e640fe627f1" xlink:to="loc_us-gaap_DevelopedTechnologyRightsMember_2dad7764-05c2-4737-8528-7648b334d838" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeAxis_a17a4b77-7f1f-4a14-93a1-cb403e1930cd" xlink:href="https://xbrl.fasb.org/srt/2024/elts/srt-2024.xsd#srt_RangeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable_163103f4-0827-4769-856b-5e24f22a3af6" xlink:to="loc_srt_RangeAxis_a17a4b77-7f1f-4a14-93a1-cb403e1930cd" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_a17a4b77-7f1f-4a14-93a1-cb403e1930cd_default" xlink:href="https://xbrl.fasb.org/srt/2024/elts/srt-2024.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_RangeAxis_a17a4b77-7f1f-4a14-93a1-cb403e1930cd" xlink:to="loc_srt_RangeMember_a17a4b77-7f1f-4a14-93a1-cb403e1930cd_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_4d5154dc-c054-48c5-82a4-03b5fe5cc3e7" xlink:href="https://xbrl.fasb.org/srt/2024/elts/srt-2024.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_RangeAxis_a17a4b77-7f1f-4a14-93a1-cb403e1930cd" xlink:to="loc_srt_RangeMember_4d5154dc-c054-48c5-82a4-03b5fe5cc3e7" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MinimumMember_44a5f861-0410-43a8-bc55-ab09ea275dbe" xlink:href="https://xbrl.fasb.org/srt/2024/elts/srt-2024.xsd#srt_MinimumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_4d5154dc-c054-48c5-82a4-03b5fe5cc3e7" xlink:to="loc_srt_MinimumMember_44a5f861-0410-43a8-bc55-ab09ea275dbe" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MaximumMember_77bbbe2b-4f50-477c-9ac2-636e268fff4d" xlink:href="https://xbrl.fasb.org/srt/2024/elts/srt-2024.xsd#srt_MaximumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_4d5154dc-c054-48c5-82a4-03b5fe5cc3e7" xlink:to="loc_srt_MaximumMember_77bbbe2b-4f50-477c-9ac2-636e268fff4d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinitelivedIntangibleAssetsAcquired1_48216a42-0404-449b-b566-af98b18ea9fb" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FinitelivedIntangibleAssetsAcquired1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_e6faa360-91e9-47e3-8e5c-086a1e9a832e" xlink:to="loc_us-gaap_FinitelivedIntangibleAssetsAcquired1_48216a42-0404-449b-b566-af98b18ea9fb" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AcquiredFiniteLivedIntangibleAssetsWeightedAverageUsefulLife_2160c011-b9e0-4194-9347-42329587414b" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_AcquiredFiniteLivedIntangibleAssetsWeightedAverageUsefulLife"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_e6faa360-91e9-47e3-8e5c-086a1e9a832e" xlink:to="loc_us-gaap_AcquiredFiniteLivedIntangibleAssetsWeightedAverageUsefulLife_2160c011-b9e0-4194-9347-42329587414b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetUsefulLife_edc333e4-1e68-4223-b1a2-105a37759162" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FiniteLivedIntangibleAssetUsefulLife"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_e6faa360-91e9-47e3-8e5c-086a1e9a832e" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetUsefulLife_edc333e4-1e68-4223-b1a2-105a37759162" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AmortizationOfIntangibleAssets_f8d2dce3-1bc6-4fae-b09c-4b134db8b715" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_AmortizationOfIntangibleAssets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_e6faa360-91e9-47e3-8e5c-086a1e9a832e" xlink:to="loc_us-gaap_AmortizationOfIntangibleAssets_f8d2dce3-1bc6-4fae-b09c-4b134db8b715" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Goodwill_ddf47771-c830-425e-b54f-86eb4d80d87e" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_Goodwill"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_e6faa360-91e9-47e3-8e5c-086a1e9a832e" xlink:to="loc_us-gaap_Goodwill_ddf47771-c830-425e-b54f-86eb4d80d87e" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GoodwillPeriodIncreaseDecrease_e942ac04-f6c8-4336-8538-263fe56aef17" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_GoodwillPeriodIncreaseDecrease"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_e6faa360-91e9-47e3-8e5c-086a1e9a832e" xlink:to="loc_us-gaap_GoodwillPeriodIncreaseDecrease_e942ac04-f6c8-4336-8538-263fe56aef17" xlink:type="arc" order="5"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.symbotic.com/role/IntangibleAssetsandGoodwillScheduleofFiniteLivedIntangibleAssetsDetails" xlink:type="simple" xlink:href="sym-20250329.xsd#IntangibleAssetsandGoodwillScheduleofFiniteLivedIntangibleAssetsDetails"/>
  <link:definitionLink xlink:role="http://www.symbotic.com/role/IntangibleAssetsandGoodwillScheduleofFiniteLivedIntangibleAssetsDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_c8bb8f70-bdab-4fe5-b9bf-942655887c56" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FiniteLivedIntangibleAssetsLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable_b9bee099-9f8d-48e4-bbad-734e245d9106" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_c8bb8f70-bdab-4fe5-b9bf-942655887c56" xlink:to="loc_us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable_b9bee099-9f8d-48e4-bbad-734e245d9106" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_989305e2-dc45-48e8-8c54-69b7a9041dbc" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable_b9bee099-9f8d-48e4-bbad-734e245d9106" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_989305e2-dc45-48e8-8c54-69b7a9041dbc" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_989305e2-dc45-48e8-8c54-69b7a9041dbc_default" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_989305e2-dc45-48e8-8c54-69b7a9041dbc" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_989305e2-dc45-48e8-8c54-69b7a9041dbc_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_60e2cbc9-9561-4eaf-86b4-a569c3c8378b" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_989305e2-dc45-48e8-8c54-69b7a9041dbc" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_60e2cbc9-9561-4eaf-86b4-a569c3c8378b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DevelopedTechnologyRightsMember_992f1101-e110-49d3-ae72-0beb865b912f" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DevelopedTechnologyRightsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_60e2cbc9-9561-4eaf-86b4-a569c3c8378b" xlink:to="loc_us-gaap_DevelopedTechnologyRightsMember_992f1101-e110-49d3-ae72-0beb865b912f" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetUsefulLife_95e8f10a-d5e3-40d0-a0d8-e98e13cc8047" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FiniteLivedIntangibleAssetUsefulLife"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_c8bb8f70-bdab-4fe5-b9bf-942655887c56" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetUsefulLife_95e8f10a-d5e3-40d0-a0d8-e98e13cc8047" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsGross_a32e3897-4026-4d80-8185-2fd4f17937ee" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FiniteLivedIntangibleAssetsGross"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_c8bb8f70-bdab-4fe5-b9bf-942655887c56" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsGross_a32e3897-4026-4d80-8185-2fd4f17937ee" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization_0bfccc70-c8c8-413b-a50f-6eaa3f9ab88b" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_c8bb8f70-bdab-4fe5-b9bf-942655887c56" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization_0bfccc70-c8c8-413b-a50f-6eaa3f9ab88b" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsNet_28ff6aed-5577-452b-acff-8807f5f1bb27" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FiniteLivedIntangibleAssetsNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_c8bb8f70-bdab-4fe5-b9bf-942655887c56" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsNet_28ff6aed-5577-452b-acff-8807f5f1bb27" xlink:type="arc" order="3"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.symbotic.com/role/IntangibleAssetsandGoodwillScheduleofFutureAnnualPreTaxAmortizationExpenseDetails" xlink:type="simple" xlink:href="sym-20250329.xsd#IntangibleAssetsandGoodwillScheduleofFutureAnnualPreTaxAmortizationExpenseDetails"/>
  <link:definitionLink xlink:role="http://www.symbotic.com/role/IntangibleAssetsandGoodwillScheduleofFutureAnnualPreTaxAmortizationExpenseDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_d81c5f2e-951f-4be8-b389-a20b69f81da5" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FiniteLivedIntangibleAssetsLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable_68ccbfdb-99eb-4a63-9ee6-ea3a34d00bbd" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_d81c5f2e-951f-4be8-b389-a20b69f81da5" xlink:to="loc_us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable_68ccbfdb-99eb-4a63-9ee6-ea3a34d00bbd" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_27ac2f76-458f-4b0a-9359-8420d78ed2d6" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable_68ccbfdb-99eb-4a63-9ee6-ea3a34d00bbd" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_27ac2f76-458f-4b0a-9359-8420d78ed2d6" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_27ac2f76-458f-4b0a-9359-8420d78ed2d6_default" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_27ac2f76-458f-4b0a-9359-8420d78ed2d6" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_27ac2f76-458f-4b0a-9359-8420d78ed2d6_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_6e131d8f-c0b3-4c8f-9662-1d14c49cb996" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_27ac2f76-458f-4b0a-9359-8420d78ed2d6" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_6e131d8f-c0b3-4c8f-9662-1d14c49cb996" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DevelopedTechnologyRightsMember_2f5bb4a1-baa4-4275-976f-e39e4da4d116" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DevelopedTechnologyRightsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_6e131d8f-c0b3-4c8f-9662-1d14c49cb996" xlink:to="loc_us-gaap_DevelopedTechnologyRightsMember_2f5bb4a1-baa4-4275-976f-e39e4da4d116" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseRemainderOfFiscalYear_a7d50823-103b-41d8-97b3-87becf3d7a7b" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseRemainderOfFiscalYear"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_d81c5f2e-951f-4be8-b389-a20b69f81da5" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseRemainderOfFiscalYear_a7d50823-103b-41d8-97b3-87becf3d7a7b" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths_5360a012-a152-4e2d-9813-9428225aa2b7" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_d81c5f2e-951f-4be8-b389-a20b69f81da5" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths_5360a012-a152-4e2d-9813-9428225aa2b7" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo_27f3a844-de44-4231-a122-a353ee3b5324" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_d81c5f2e-951f-4be8-b389-a20b69f81da5" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo_27f3a844-de44-4231-a122-a353ee3b5324" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree_2c2233aa-99a5-4bc4-8d83-34a154864617" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_d81c5f2e-951f-4be8-b389-a20b69f81da5" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree_2c2233aa-99a5-4bc4-8d83-34a154864617" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_sym_FiniteLivedIntangibleAssetsExpectedAmortizationYearFourAndThereafter_38137c44-c716-4173-976d-bfa4a08250a4" xlink:href="sym-20250329.xsd#sym_FiniteLivedIntangibleAssetsExpectedAmortizationYearFourAndThereafter"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_d81c5f2e-951f-4be8-b389-a20b69f81da5" xlink:to="loc_sym_FiniteLivedIntangibleAssetsExpectedAmortizationYearFourAndThereafter_38137c44-c716-4173-976d-bfa4a08250a4" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsNet_7de97cd2-8a7a-4db1-adaa-01ba0aa2192d" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FiniteLivedIntangibleAssetsNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_d81c5f2e-951f-4be8-b389-a20b69f81da5" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsNet_7de97cd2-8a7a-4db1-adaa-01ba0aa2192d" xlink:type="arc" order="5"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.symbotic.com/role/FairValueMeasuresDetails" xlink:type="simple" xlink:href="sym-20250329.xsd#FairValueMeasuresDetails"/>
  <link:definitionLink xlink:role="http://www.symbotic.com/role/FairValueMeasuresDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationLineItems_3ecce740-7614-4cf5-bab0-28ff96ac8a29" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationTable_c30c4ff7-4468-4b5e-891d-fa254293b4ac" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationLineItems_3ecce740-7614-4cf5-bab0-28ff96ac8a29" xlink:to="loc_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationTable_c30c4ff7-4468-4b5e-891d-fa254293b4ac" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueByAssetClassAxis_e20358f0-4c0b-4761-ae0e-0e76b0e8e974" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FairValueByAssetClassAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationTable_c30c4ff7-4468-4b5e-891d-fa254293b4ac" xlink:to="loc_us-gaap_FairValueByAssetClassAxis_e20358f0-4c0b-4761-ae0e-0e76b0e8e974" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain_e20358f0-4c0b-4761-ae0e-0e76b0e8e974_default" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FairValueByAssetClassAxis_e20358f0-4c0b-4761-ae0e-0e76b0e8e974" xlink:to="loc_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain_e20358f0-4c0b-4761-ae0e-0e76b0e8e974_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain_f246899e-6d01-4b67-8eba-bdf224a67298" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FairValueByAssetClassAxis_e20358f0-4c0b-4761-ae0e-0e76b0e8e974" xlink:to="loc_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain_f246899e-6d01-4b67-8eba-bdf224a67298" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MoneyMarketFundsMember_93a3b02a-2b14-4f1a-99f3-bfdd5f367af9" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_MoneyMarketFundsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain_f246899e-6d01-4b67-8eba-bdf224a67298" xlink:to="loc_us-gaap_MoneyMarketFundsMember_93a3b02a-2b14-4f1a-99f3-bfdd5f367af9" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_WarrantMember_bc235059-2226-45da-aff1-b8dc3ae33dad" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_WarrantMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain_f246899e-6d01-4b67-8eba-bdf224a67298" xlink:to="loc_us-gaap_WarrantMember_bc235059-2226-45da-aff1-b8dc3ae33dad" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_a327cfd5-3f8b-4cd7-babf-bf0f40d3d52c" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FairValueByFairValueHierarchyLevelAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationTable_c30c4ff7-4468-4b5e-891d-fa254293b4ac" xlink:to="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_a327cfd5-3f8b-4cd7-babf-bf0f40d3d52c" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_a327cfd5-3f8b-4cd7-babf-bf0f40d3d52c_default" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_a327cfd5-3f8b-4cd7-babf-bf0f40d3d52c" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_a327cfd5-3f8b-4cd7-babf-bf0f40d3d52c_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_67c2e9b1-9d29-4584-8156-ba4dacb252b0" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_a327cfd5-3f8b-4cd7-babf-bf0f40d3d52c" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_67c2e9b1-9d29-4584-8156-ba4dacb252b0" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueInputsLevel1Member_f56ff076-70bb-461e-87a1-b7ca35c25811" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FairValueInputsLevel1Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_67c2e9b1-9d29-4584-8156-ba4dacb252b0" xlink:to="loc_us-gaap_FairValueInputsLevel1Member_f56ff076-70bb-461e-87a1-b7ca35c25811" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueInputsLevel2Member_decda1d3-62c0-4f52-a393-de061b01a52e" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FairValueInputsLevel2Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_67c2e9b1-9d29-4584-8156-ba4dacb252b0" xlink:to="loc_us-gaap_FairValueInputsLevel2Member_decda1d3-62c0-4f52-a393-de061b01a52e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueInputsLevel3Member_cce649a0-5b4a-4077-8984-bdff8eaa7286" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FairValueInputsLevel3Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_67c2e9b1-9d29-4584-8156-ba4dacb252b0" xlink:to="loc_us-gaap_FairValueInputsLevel3Member_cce649a0-5b4a-4077-8984-bdff8eaa7286" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueByMeasurementFrequencyAxis_5da15bdc-582f-47f2-b2c5-52324631bace" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FairValueByMeasurementFrequencyAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationTable_c30c4ff7-4468-4b5e-891d-fa254293b4ac" xlink:to="loc_us-gaap_FairValueByMeasurementFrequencyAxis_5da15bdc-582f-47f2-b2c5-52324631bace" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementFrequencyDomain_5da15bdc-582f-47f2-b2c5-52324631bace_default" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FairValueMeasurementFrequencyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FairValueByMeasurementFrequencyAxis_5da15bdc-582f-47f2-b2c5-52324631bace" xlink:to="loc_us-gaap_FairValueMeasurementFrequencyDomain_5da15bdc-582f-47f2-b2c5-52324631bace_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementFrequencyDomain_49ce7a4d-db15-421b-b065-bd2ccb771c7a" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FairValueMeasurementFrequencyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FairValueByMeasurementFrequencyAxis_5da15bdc-582f-47f2-b2c5-52324631bace" xlink:to="loc_us-gaap_FairValueMeasurementFrequencyDomain_49ce7a4d-db15-421b-b065-bd2ccb771c7a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementsRecurringMember_07c878c8-fc35-46ed-ad5a-89b4f505ce41" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FairValueMeasurementsRecurringMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementFrequencyDomain_49ce7a4d-db15-421b-b065-bd2ccb771c7a" xlink:to="loc_us-gaap_FairValueMeasurementsRecurringMember_07c878c8-fc35-46ed-ad5a-89b4f505ce41" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetsFairValueDisclosure_4b8c08dc-26df-4597-b5ce-7d0b56b75808" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_AssetsFairValueDisclosure"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationLineItems_3ecce740-7614-4cf5-bab0-28ff96ac8a29" xlink:to="loc_us-gaap_AssetsFairValueDisclosure_4b8c08dc-26df-4597-b5ce-7d0b56b75808" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesFairValueDisclosure_c5bdbb08-9b9b-42f1-8c75-4441a4e1f1e0" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_LiabilitiesFairValueDisclosure"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationLineItems_3ecce740-7614-4cf5-bab0-28ff96ac8a29" xlink:to="loc_us-gaap_LiabilitiesFairValueDisclosure_c5bdbb08-9b9b-42f1-8c75-4441a4e1f1e0" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.symbotic.com/role/RelatedPartyTransactionsDetails" xlink:type="simple" xlink:href="sym-20250329.xsd#RelatedPartyTransactionsDetails"/>
  <link:definitionLink xlink:role="http://www.symbotic.com/role/RelatedPartyTransactionsDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyTransactionLineItems_47271279-c47d-45d9-9067-01a3c500d04b" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_RelatedPartyTransactionLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_4598916c-42aa-4045-85bc-190d0cdc060b" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems_47271279-c47d-45d9-9067-01a3c500d04b" xlink:to="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_4598916c-42aa-4045-85bc-190d0cdc060b" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyTransactionAxis_61b31eec-4c2e-4f46-ab0f-6421fc8a872a" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_RelatedPartyTransactionAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_4598916c-42aa-4045-85bc-190d0cdc060b" xlink:to="loc_us-gaap_RelatedPartyTransactionAxis_61b31eec-4c2e-4f46-ab0f-6421fc8a872a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyTransactionDomain_61b31eec-4c2e-4f46-ab0f-6421fc8a872a_default" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_RelatedPartyTransactionDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RelatedPartyTransactionAxis_61b31eec-4c2e-4f46-ab0f-6421fc8a872a" xlink:to="loc_us-gaap_RelatedPartyTransactionDomain_61b31eec-4c2e-4f46-ab0f-6421fc8a872a_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyTransactionDomain_e38a209e-ff31-4fac-b35f-be6bc5990079" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_RelatedPartyTransactionDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RelatedPartyTransactionAxis_61b31eec-4c2e-4f46-ab0f-6421fc8a872a" xlink:to="loc_us-gaap_RelatedPartyTransactionDomain_e38a209e-ff31-4fac-b35f-be6bc5990079" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_sym_AircraftTimeSharingAgreementMember_c3b8ae89-8e0e-4d38-9c0d-18a4357f4aa7" xlink:href="sym-20250329.xsd#sym_AircraftTimeSharingAgreementMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyTransactionDomain_e38a209e-ff31-4fac-b35f-be6bc5990079" xlink:to="loc_sym_AircraftTimeSharingAgreementMember_c3b8ae89-8e0e-4d38-9c0d-18a4357f4aa7" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_sym_UsageOfFacilityAndEmployeeServicesMember_fc8e0ff0-aaff-4be4-b4a4-0f2ea10691dc" xlink:href="sym-20250329.xsd#sym_UsageOfFacilityAndEmployeeServicesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyTransactionDomain_e38a209e-ff31-4fac-b35f-be6bc5990079" xlink:to="loc_sym_UsageOfFacilityAndEmployeeServicesMember_fc8e0ff0-aaff-4be4-b4a4-0f2ea10691dc" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_sym_CSWholesaleGrocersInc.Member_3be0d4a4-51be-4343-9df4-ab4266341580" xlink:href="sym-20250329.xsd#sym_CSWholesaleGrocersInc.Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyTransactionDomain_e38a209e-ff31-4fac-b35f-be6bc5990079" xlink:to="loc_sym_CSWholesaleGrocersInc.Member_3be0d4a4-51be-4343-9df4-ab4266341580" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_sym_GreenBoxMember_a1618124-bf5c-459c-ae48-21b38f0f5906" xlink:href="sym-20250329.xsd#sym_GreenBoxMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyTransactionDomain_e38a209e-ff31-4fac-b35f-be6bc5990079" xlink:to="loc_sym_GreenBoxMember_a1618124-bf5c-459c-ae48-21b38f0f5906" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_sym_GreenBoxSharedServicesAgreementMember_6b0fdc4a-913b-4b1e-a9b8-936f6ad81254" xlink:href="sym-20250329.xsd#sym_GreenBoxSharedServicesAgreementMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyTransactionDomain_e38a209e-ff31-4fac-b35f-be6bc5990079" xlink:to="loc_sym_GreenBoxSharedServicesAgreementMember_6b0fdc4a-913b-4b1e-a9b8-936f6ad81254" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_bf7ada7a-4b41-4e12-917d-a0d20d8c0edf" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_RelatedPartyTransactionsByRelatedPartyAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_4598916c-42aa-4045-85bc-190d0cdc060b" xlink:to="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_bf7ada7a-4b41-4e12-917d-a0d20d8c0edf" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyDomain_bf7ada7a-4b41-4e12-917d-a0d20d8c0edf_default" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_RelatedPartyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_bf7ada7a-4b41-4e12-917d-a0d20d8c0edf" xlink:to="loc_us-gaap_RelatedPartyDomain_bf7ada7a-4b41-4e12-917d-a0d20d8c0edf_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyDomain_9b0ba4fc-13f5-49e6-ad81-ec649914e569" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_RelatedPartyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_bf7ada7a-4b41-4e12-917d-a0d20d8c0edf" xlink:to="loc_us-gaap_RelatedPartyDomain_9b0ba4fc-13f5-49e6-ad81-ec649914e569" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyMember_7cd28ca2-373f-4bfa-8ebe-0fcaa5c21aa1" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_RelatedPartyMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyDomain_9b0ba4fc-13f5-49e6-ad81-ec649914e569" xlink:to="loc_us-gaap_RelatedPartyMember_7cd28ca2-373f-4bfa-8ebe-0fcaa5c21aa1" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidatedEntitiesAxis_41b8d208-65ba-4505-842c-4b5aae1be86c" xlink:href="https://xbrl.fasb.org/srt/2024/elts/srt-2024.xsd#srt_ConsolidatedEntitiesAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_4598916c-42aa-4045-85bc-190d0cdc060b" xlink:to="loc_srt_ConsolidatedEntitiesAxis_41b8d208-65ba-4505-842c-4b5aae1be86c" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidatedEntitiesDomain_41b8d208-65ba-4505-842c-4b5aae1be86c_default" xlink:href="https://xbrl.fasb.org/srt/2024/elts/srt-2024.xsd#srt_ConsolidatedEntitiesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ConsolidatedEntitiesAxis_41b8d208-65ba-4505-842c-4b5aae1be86c" xlink:to="loc_srt_ConsolidatedEntitiesDomain_41b8d208-65ba-4505-842c-4b5aae1be86c_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidatedEntitiesDomain_18733cb2-64e6-435b-a4ca-37034b631ea5" xlink:href="https://xbrl.fasb.org/srt/2024/elts/srt-2024.xsd#srt_ConsolidatedEntitiesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ConsolidatedEntitiesAxis_41b8d208-65ba-4505-842c-4b5aae1be86c" xlink:to="loc_srt_ConsolidatedEntitiesDomain_18733cb2-64e6-435b-a4ca-37034b631ea5" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_VariableInterestEntityNotPrimaryBeneficiaryMember_df8d0b68-6958-4b00-8f12-fff0d38d5448" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_VariableInterestEntityNotPrimaryBeneficiaryMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ConsolidatedEntitiesDomain_18733cb2-64e6-435b-a4ca-37034b631ea5" xlink:to="loc_us-gaap_VariableInterestEntityNotPrimaryBeneficiaryMember_df8d0b68-6958-4b00-8f12-fff0d38d5448" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_sym_NumberOfAircrafts_9bf2f89a-2425-40ee-a6e2-39899b6aac51" xlink:href="sym-20250329.xsd#sym_NumberOfAircrafts"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems_47271279-c47d-45d9-9067-01a3c500d04b" xlink:to="loc_sym_NumberOfAircrafts_9bf2f89a-2425-40ee-a6e2-39899b6aac51" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyTransactionAmountsOfTransaction_4265a378-762e-44ab-9695-3c33ba393ce5" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_RelatedPartyTransactionAmountsOfTransaction"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems_47271279-c47d-45d9-9067-01a3c500d04b" xlink:to="loc_us-gaap_RelatedPartyTransactionAmountsOfTransaction_4265a378-762e-44ab-9695-3c33ba393ce5" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_11fcd120-fda9-4972-a4b3-b3b334fc3a73" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems_47271279-c47d-45d9-9067-01a3c500d04b" xlink:to="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_11fcd120-fda9-4972-a4b3-b3b334fc3a73" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountsReceivableNet_c7d11038-6e1c-41d6-a327-3c0056308149" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_AccountsReceivableNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems_47271279-c47d-45d9-9067-01a3c500d04b" xlink:to="loc_us-gaap_AccountsReceivableNet_c7d11038-6e1c-41d6-a327-3c0056308149" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ContractWithCustomerLiability_36d2c25d-0fe3-45f9-b647-bd31543bb01e" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ContractWithCustomerLiability"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems_47271279-c47d-45d9-9067-01a3c500d04b" xlink:to="loc_us-gaap_ContractWithCustomerLiability_36d2c25d-0fe3-45f9-b647-bd31543bb01e" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueRemainingPerformanceObligation_9e8d5d85-da76-4dd6-a504-3b807c810347" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_RevenueRemainingPerformanceObligation"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems_47271279-c47d-45d9-9067-01a3c500d04b" xlink:to="loc_us-gaap_RevenueRemainingPerformanceObligation_9e8d5d85-da76-4dd6-a504-3b807c810347" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsToAcquireInterestInSubsidiariesAndAffiliates_d7686d9e-7358-405c-bc4e-ce9578bceab9" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_PaymentsToAcquireInterestInSubsidiariesAndAffiliates"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems_47271279-c47d-45d9-9067-01a3c500d04b" xlink:to="loc_us-gaap_PaymentsToAcquireInterestInSubsidiariesAndAffiliates_d7686d9e-7358-405c-bc4e-ce9578bceab9" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyTaxExpenseDueToAffiliatesCurrent_abb0ba0f-c27d-4faf-94c0-956c331208dd" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_RelatedPartyTaxExpenseDueToAffiliatesCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems_47271279-c47d-45d9-9067-01a3c500d04b" xlink:to="loc_us-gaap_RelatedPartyTaxExpenseDueToAffiliatesCurrent_abb0ba0f-c27d-4faf-94c0-956c331208dd" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyTaxExpenseDueFromAffiliatesCurrent_1568367a-a103-458f-b5fc-264d91b5c8cc" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_RelatedPartyTaxExpenseDueFromAffiliatesCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems_47271279-c47d-45d9-9067-01a3c500d04b" xlink:to="loc_us-gaap_RelatedPartyTaxExpenseDueFromAffiliatesCurrent_1568367a-a103-458f-b5fc-264d91b5c8cc" xlink:type="arc" order="8"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.symbotic.com/role/VariableInterestEntitiesVIENarrativeDetails" xlink:type="simple" xlink:href="sym-20250329.xsd#VariableInterestEntitiesVIENarrativeDetails"/>
  <link:definitionLink xlink:role="http://www.symbotic.com/role/VariableInterestEntitiesVIENarrativeDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_VariableInterestEntityLineItems_bf37feac-242b-41a5-834a-b4a5a124a5bd" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_VariableInterestEntityLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfVariableInterestEntitiesTable_15747e0b-cb49-4982-85d9-b8d0e5a5f5fd" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ScheduleOfVariableInterestEntitiesTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_VariableInterestEntityLineItems_bf37feac-242b-41a5-834a-b4a5a124a5bd" xlink:to="loc_us-gaap_ScheduleOfVariableInterestEntitiesTable_15747e0b-cb49-4982-85d9-b8d0e5a5f5fd" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis_d4181b87-3804-44e0-93f2-39bda8fedf66" xlink:href="https://xbrl.fasb.org/srt/2024/elts/srt-2024.xsd#srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfVariableInterestEntitiesTable_15747e0b-cb49-4982-85d9-b8d0e5a5f5fd" xlink:to="loc_srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis_d4181b87-3804-44e0-93f2-39bda8fedf66" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_EquityMethodInvesteeNameDomain_d4181b87-3804-44e0-93f2-39bda8fedf66_default" xlink:href="https://xbrl.fasb.org/srt/2024/elts/srt-2024.xsd#srt_EquityMethodInvesteeNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis_d4181b87-3804-44e0-93f2-39bda8fedf66" xlink:to="loc_srt_EquityMethodInvesteeNameDomain_d4181b87-3804-44e0-93f2-39bda8fedf66_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_EquityMethodInvesteeNameDomain_18046ba2-b89d-48de-a2c3-a3b84d91a547" xlink:href="https://xbrl.fasb.org/srt/2024/elts/srt-2024.xsd#srt_EquityMethodInvesteeNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis_d4181b87-3804-44e0-93f2-39bda8fedf66" xlink:to="loc_srt_EquityMethodInvesteeNameDomain_18046ba2-b89d-48de-a2c3-a3b84d91a547" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_sym_GreenBoxSystemsLLCMember_1d102f12-4e0e-447e-9699-7e1c21903b8a" xlink:href="sym-20250329.xsd#sym_GreenBoxSystemsLLCMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_EquityMethodInvesteeNameDomain_18046ba2-b89d-48de-a2c3-a3b84d91a547" xlink:to="loc_sym_GreenBoxSystemsLLCMember_1d102f12-4e0e-447e-9699-7e1c21903b8a" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_69e04bc0-e098-4adb-8e73-899c01e9f775" xlink:href="https://xbrl.sec.gov/dei/2024/dei-2024.xsd#dei_LegalEntityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfVariableInterestEntitiesTable_15747e0b-cb49-4982-85d9-b8d0e5a5f5fd" xlink:to="loc_dei_LegalEntityAxis_69e04bc0-e098-4adb-8e73-899c01e9f775" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_69e04bc0-e098-4adb-8e73-899c01e9f775_default" xlink:href="https://xbrl.sec.gov/dei/2024/dei-2024.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_69e04bc0-e098-4adb-8e73-899c01e9f775" xlink:to="loc_dei_EntityDomain_69e04bc0-e098-4adb-8e73-899c01e9f775_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_1e3add2e-efe3-4617-a950-19edde52a3ec" xlink:href="https://xbrl.sec.gov/dei/2024/dei-2024.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_69e04bc0-e098-4adb-8e73-899c01e9f775" xlink:to="loc_dei_EntityDomain_1e3add2e-efe3-4617-a950-19edde52a3ec" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_sym_SymboticHoldingsLLCMember_5a776ec5-c4bc-4217-8e35-ba41ee45e0f9" xlink:href="sym-20250329.xsd#sym_SymboticHoldingsLLCMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_1e3add2e-efe3-4617-a950-19edde52a3ec" xlink:to="loc_sym_SymboticHoldingsLLCMember_5a776ec5-c4bc-4217-8e35-ba41ee45e0f9" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_sym_SunlightInvestmentCorpMember_e4ea8c9e-01b1-49fd-adaf-3295a0ec5faf" xlink:href="sym-20250329.xsd#sym_SunlightInvestmentCorpMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_1e3add2e-efe3-4617-a950-19edde52a3ec" xlink:to="loc_sym_SunlightInvestmentCorpMember_e4ea8c9e-01b1-49fd-adaf-3295a0ec5faf" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidatedEntitiesAxis_f94142e7-6efb-464a-a107-646f49d3782b" xlink:href="https://xbrl.fasb.org/srt/2024/elts/srt-2024.xsd#srt_ConsolidatedEntitiesAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfVariableInterestEntitiesTable_15747e0b-cb49-4982-85d9-b8d0e5a5f5fd" xlink:to="loc_srt_ConsolidatedEntitiesAxis_f94142e7-6efb-464a-a107-646f49d3782b" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidatedEntitiesDomain_f94142e7-6efb-464a-a107-646f49d3782b_default" xlink:href="https://xbrl.fasb.org/srt/2024/elts/srt-2024.xsd#srt_ConsolidatedEntitiesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ConsolidatedEntitiesAxis_f94142e7-6efb-464a-a107-646f49d3782b" xlink:to="loc_srt_ConsolidatedEntitiesDomain_f94142e7-6efb-464a-a107-646f49d3782b_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidatedEntitiesDomain_8e2982fd-37a4-4844-9d66-09e13b3c5fcb" xlink:href="https://xbrl.fasb.org/srt/2024/elts/srt-2024.xsd#srt_ConsolidatedEntitiesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ConsolidatedEntitiesAxis_f94142e7-6efb-464a-a107-646f49d3782b" xlink:to="loc_srt_ConsolidatedEntitiesDomain_8e2982fd-37a4-4844-9d66-09e13b3c5fcb" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_VariableInterestEntityNotPrimaryBeneficiaryMember_1396b184-d22f-4e1b-946e-67ebc9b9697a" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_VariableInterestEntityNotPrimaryBeneficiaryMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ConsolidatedEntitiesDomain_8e2982fd-37a4-4844-9d66-09e13b3c5fcb" xlink:to="loc_us-gaap_VariableInterestEntityNotPrimaryBeneficiaryMember_1396b184-d22f-4e1b-946e-67ebc9b9697a" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_VariableInterestEntityOwnershipPercentage_5d7f9dd7-1d98-4837-a1a9-b11c706d1a88" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_VariableInterestEntityOwnershipPercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_VariableInterestEntityLineItems_bf37feac-242b-41a5-834a-b4a5a124a5bd" xlink:to="loc_us-gaap_VariableInterestEntityOwnershipPercentage_5d7f9dd7-1d98-4837-a1a9-b11c706d1a88" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_VariableInterestEntityEntityMaximumLossExposureAmount_e5cdd229-a7f3-4a25-97e3-4de8deceba0c" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_VariableInterestEntityEntityMaximumLossExposureAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_VariableInterestEntityLineItems_bf37feac-242b-41a5-834a-b4a5a124a5bd" xlink:to="loc_us-gaap_VariableInterestEntityEntityMaximumLossExposureAmount_e5cdd229-a7f3-4a25-97e3-4de8deceba0c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures_6214920d-45d5-4a39-aa65-fb32155459e1" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_VariableInterestEntityLineItems_bf37feac-242b-41a5-834a-b4a5a124a5bd" xlink:to="loc_us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures_6214920d-45d5-4a39-aa65-fb32155459e1" xlink:type="arc" order="2"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.symbotic.com/role/VariableInterestEntitiesVIEScheduleofVariableInterestEntitiesDetails" xlink:type="simple" xlink:href="sym-20250329.xsd#VariableInterestEntitiesVIEScheduleofVariableInterestEntitiesDetails"/>
  <link:definitionLink xlink:role="http://www.symbotic.com/role/VariableInterestEntitiesVIEScheduleofVariableInterestEntitiesDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_VariableInterestEntityLineItems_b3c5ddb3-348b-4f95-bd19-9917a193ee1e" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_VariableInterestEntityLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfVariableInterestEntitiesTable_cb426215-98c7-48a5-b7cf-6bf34804b868" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ScheduleOfVariableInterestEntitiesTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_VariableInterestEntityLineItems_b3c5ddb3-348b-4f95-bd19-9917a193ee1e" xlink:to="loc_us-gaap_ScheduleOfVariableInterestEntitiesTable_cb426215-98c7-48a5-b7cf-6bf34804b868" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidatedEntitiesAxis_bb6ad0cc-dc8d-42d6-9e16-b947b2d8e778" xlink:href="https://xbrl.fasb.org/srt/2024/elts/srt-2024.xsd#srt_ConsolidatedEntitiesAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfVariableInterestEntitiesTable_cb426215-98c7-48a5-b7cf-6bf34804b868" xlink:to="loc_srt_ConsolidatedEntitiesAxis_bb6ad0cc-dc8d-42d6-9e16-b947b2d8e778" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidatedEntitiesDomain_bb6ad0cc-dc8d-42d6-9e16-b947b2d8e778_default" xlink:href="https://xbrl.fasb.org/srt/2024/elts/srt-2024.xsd#srt_ConsolidatedEntitiesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ConsolidatedEntitiesAxis_bb6ad0cc-dc8d-42d6-9e16-b947b2d8e778" xlink:to="loc_srt_ConsolidatedEntitiesDomain_bb6ad0cc-dc8d-42d6-9e16-b947b2d8e778_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidatedEntitiesDomain_2d3ebcd2-e401-4cd0-8ed1-d781662285e0" xlink:href="https://xbrl.fasb.org/srt/2024/elts/srt-2024.xsd#srt_ConsolidatedEntitiesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ConsolidatedEntitiesAxis_bb6ad0cc-dc8d-42d6-9e16-b947b2d8e778" xlink:to="loc_srt_ConsolidatedEntitiesDomain_2d3ebcd2-e401-4cd0-8ed1-d781662285e0" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_VariableInterestEntityNotPrimaryBeneficiaryMember_8c4afb5d-32f5-49aa-88bb-1d3307f7ea9a" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_VariableInterestEntityNotPrimaryBeneficiaryMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ConsolidatedEntitiesDomain_2d3ebcd2-e401-4cd0-8ed1-d781662285e0" xlink:to="loc_us-gaap_VariableInterestEntityNotPrimaryBeneficiaryMember_8c4afb5d-32f5-49aa-88bb-1d3307f7ea9a" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures_e23c581a-ad52-47d0-a6a8-13ee39787414" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_VariableInterestEntityLineItems_b3c5ddb3-348b-4f95-bd19-9917a193ee1e" xlink:to="loc_us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures_e23c581a-ad52-47d0-a6a8-13ee39787414" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_VariableInterestEntityEntityMaximumLossExposureAmount_cf2cf58a-e67a-4906-8fdc-44edd0a71e04" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_VariableInterestEntityEntityMaximumLossExposureAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_VariableInterestEntityLineItems_b3c5ddb3-348b-4f95-bd19-9917a193ee1e" xlink:to="loc_us-gaap_VariableInterestEntityEntityMaximumLossExposureAmount_cf2cf58a-e67a-4906-8fdc-44edd0a71e04" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.symbotic.com/role/NetLossperShareNarrativeDetails" xlink:type="simple" xlink:href="sym-20250329.xsd#NetLossperShareNarrativeDetails"/>
  <link:definitionLink xlink:role="http://www.symbotic.com/role/NetLossperShareNarrativeDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems_929c5382-a41a-419a-8d29-19b2549f0213" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTable_0fc6f8c2-fc11-4e17-be27-bcd3a2469c86" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems_929c5382-a41a-419a-8d29-19b2549f0213" xlink:to="loc_us-gaap_ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTable_0fc6f8c2-fc11-4e17-be27-bcd3a2469c86" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis_c56c0d37-6a2e-4287-b314-017c4c543af4" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTable_0fc6f8c2-fc11-4e17-be27-bcd3a2469c86" xlink:to="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis_c56c0d37-6a2e-4287-b314-017c4c543af4" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AntidilutiveSecuritiesNameDomain_c56c0d37-6a2e-4287-b314-017c4c543af4_default" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_AntidilutiveSecuritiesNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis_c56c0d37-6a2e-4287-b314-017c4c543af4" xlink:to="loc_us-gaap_AntidilutiveSecuritiesNameDomain_c56c0d37-6a2e-4287-b314-017c4c543af4_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AntidilutiveSecuritiesNameDomain_659d0d9e-d883-46bc-81f1-26bb4e809f8d" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_AntidilutiveSecuritiesNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis_c56c0d37-6a2e-4287-b314-017c4c543af4" xlink:to="loc_us-gaap_AntidilutiveSecuritiesNameDomain_659d0d9e-d883-46bc-81f1-26bb4e809f8d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestrictedStockUnitsRSUMember_531b554a-295b-40c4-8382-68bba553c2ab" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_RestrictedStockUnitsRSUMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AntidilutiveSecuritiesNameDomain_659d0d9e-d883-46bc-81f1-26bb4e809f8d" xlink:to="loc_us-gaap_RestrictedStockUnitsRSUMember_531b554a-295b-40c4-8382-68bba553c2ab" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_sym_UnvestedWarrantsMember_233391c1-80ad-45eb-8fc2-762c33d15447" xlink:href="sym-20250329.xsd#sym_UnvestedWarrantsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AntidilutiveSecuritiesNameDomain_659d0d9e-d883-46bc-81f1-26bb4e809f8d" xlink:to="loc_sym_UnvestedWarrantsMember_233391c1-80ad-45eb-8fc2-762c33d15447" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_sym_AverageSharePrice_6e456f6a-1241-4ead-a0a5-bd3aff38f5f3" xlink:href="sym-20250329.xsd#sym_AverageSharePrice"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems_929c5382-a41a-419a-8d29-19b2549f0213" xlink:to="loc_sym_AverageSharePrice_6e456f6a-1241-4ead-a0a5-bd3aff38f5f3" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount_87c3fc75-4d5d-4e94-9e18-6b1fcbd6d386" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems_929c5382-a41a-419a-8d29-19b2549f0213" xlink:to="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount_87c3fc75-4d5d-4e94-9e18-6b1fcbd6d386" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.symbotic.com/role/StockBasedCompensationandWarrantUnitsScheduleofStockBasedCompensationExpenseDetails" xlink:type="simple" xlink:href="sym-20250329.xsd#StockBasedCompensationandWarrantUnitsScheduleofStockBasedCompensationExpenseDetails"/>
  <link:definitionLink xlink:role="http://www.symbotic.com/role/StockBasedCompensationandWarrantUnitsScheduleofStockBasedCompensationExpenseDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsLineItems_ad26b10d-11b2-4a76-933a-55c9d1e46cfb" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfEmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsTable_dfc53163-2388-4881-8203-3bf7ead66687" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ScheduleOfEmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsLineItems_ad26b10d-11b2-4a76-933a-55c9d1e46cfb" xlink:to="loc_us-gaap_ScheduleOfEmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsTable_dfc53163-2388-4881-8203-3bf7ead66687" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AwardTypeAxis_dbe24ab5-3bc6-4960-9bca-9022dfaa9cfe" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_AwardTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfEmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsTable_dfc53163-2388-4881-8203-3bf7ead66687" xlink:to="loc_us-gaap_AwardTypeAxis_dbe24ab5-3bc6-4960-9bca-9022dfaa9cfe" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_dbe24ab5-3bc6-4960-9bca-9022dfaa9cfe_default" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_AwardTypeAxis_dbe24ab5-3bc6-4960-9bca-9022dfaa9cfe" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_dbe24ab5-3bc6-4960-9bca-9022dfaa9cfe_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_dd9ca37a-8921-45dd-a2e7-ad42bc217125" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_AwardTypeAxis_dbe24ab5-3bc6-4960-9bca-9022dfaa9cfe" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_dd9ca37a-8921-45dd-a2e7-ad42bc217125" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestrictedStockUnitsRSUMember_457fe48f-af78-4875-947c-08a961c370eb" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_RestrictedStockUnitsRSUMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_dd9ca37a-8921-45dd-a2e7-ad42bc217125" xlink:to="loc_us-gaap_RestrictedStockUnitsRSUMember_457fe48f-af78-4875-947c-08a961c370eb" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EmployeeStockMember_b9191344-e5ec-4544-9a54-624056bae3e9" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_EmployeeStockMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_dd9ca37a-8921-45dd-a2e7-ad42bc217125" xlink:to="loc_us-gaap_EmployeeStockMember_b9191344-e5ec-4544-9a54-624056bae3e9" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeStatementLocationAxis_a8394582-e37f-4166-9ffd-d21337a78df0" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_IncomeStatementLocationAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfEmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsTable_dfc53163-2388-4881-8203-3bf7ead66687" xlink:to="loc_us-gaap_IncomeStatementLocationAxis_a8394582-e37f-4166-9ffd-d21337a78df0" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeStatementLocationDomain_a8394582-e37f-4166-9ffd-d21337a78df0_default" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_IncomeStatementLocationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_IncomeStatementLocationAxis_a8394582-e37f-4166-9ffd-d21337a78df0" xlink:to="loc_us-gaap_IncomeStatementLocationDomain_a8394582-e37f-4166-9ffd-d21337a78df0_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeStatementLocationDomain_d28fdcf1-53a7-4c21-909e-352c006f5919" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_IncomeStatementLocationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_IncomeStatementLocationAxis_a8394582-e37f-4166-9ffd-d21337a78df0" xlink:to="loc_us-gaap_IncomeStatementLocationDomain_d28fdcf1-53a7-4c21-909e-352c006f5919" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CostOfSalesMember_cd8afd31-24b8-44e5-a358-77b46d8e90c2" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_CostOfSalesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementLocationDomain_d28fdcf1-53a7-4c21-909e-352c006f5919" xlink:to="loc_us-gaap_CostOfSalesMember_cd8afd31-24b8-44e5-a358-77b46d8e90c2" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ResearchAndDevelopmentExpenseMember_f15651ab-fcf1-4b6d-8a2a-88568018a2a0" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ResearchAndDevelopmentExpenseMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementLocationDomain_d28fdcf1-53a7-4c21-909e-352c006f5919" xlink:to="loc_us-gaap_ResearchAndDevelopmentExpenseMember_f15651ab-fcf1-4b6d-8a2a-88568018a2a0" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SellingGeneralAndAdministrativeExpensesMember_d09ddaf0-16c6-4be2-927f-1c61c2a586c2" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_SellingGeneralAndAdministrativeExpensesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementLocationDomain_d28fdcf1-53a7-4c21-909e-352c006f5919" xlink:to="loc_us-gaap_SellingGeneralAndAdministrativeExpensesMember_d09ddaf0-16c6-4be2-927f-1c61c2a586c2" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductOrServiceAxis_e08f13dd-643f-404a-8b4e-42b5e7596cd5" xlink:href="https://xbrl.fasb.org/srt/2024/elts/srt-2024.xsd#srt_ProductOrServiceAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfEmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsTable_dfc53163-2388-4881-8203-3bf7ead66687" xlink:to="loc_srt_ProductOrServiceAxis_e08f13dd-643f-404a-8b4e-42b5e7596cd5" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain_e08f13dd-643f-404a-8b4e-42b5e7596cd5_default" xlink:href="https://xbrl.fasb.org/srt/2024/elts/srt-2024.xsd#srt_ProductsAndServicesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ProductOrServiceAxis_e08f13dd-643f-404a-8b4e-42b5e7596cd5" xlink:to="loc_srt_ProductsAndServicesDomain_e08f13dd-643f-404a-8b4e-42b5e7596cd5_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain_34cb1210-97e8-4b98-b032-410b5dccf021" xlink:href="https://xbrl.fasb.org/srt/2024/elts/srt-2024.xsd#srt_ProductsAndServicesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ProductOrServiceAxis_e08f13dd-643f-404a-8b4e-42b5e7596cd5" xlink:to="loc_srt_ProductsAndServicesDomain_34cb1210-97e8-4b98-b032-410b5dccf021" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_sym_SystemsMember_c672f961-bd72-4809-b086-9276fc59f49f" xlink:href="sym-20250329.xsd#sym_SystemsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_34cb1210-97e8-4b98-b032-410b5dccf021" xlink:to="loc_sym_SystemsMember_c672f961-bd72-4809-b086-9276fc59f49f" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_sym_SoftwareMaintenanceAndSupportMember_1add9033-4f66-4217-b01e-daed5b2e4d97" xlink:href="sym-20250329.xsd#sym_SoftwareMaintenanceAndSupportMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_34cb1210-97e8-4b98-b032-410b5dccf021" xlink:to="loc_sym_SoftwareMaintenanceAndSupportMember_1add9033-4f66-4217-b01e-daed5b2e4d97" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_sym_OperationServicesMember_1dc12cc8-6b46-4219-ae21-2932281bf85d" xlink:href="sym-20250329.xsd#sym_OperationServicesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_34cb1210-97e8-4b98-b032-410b5dccf021" xlink:to="loc_sym_OperationServicesMember_1dc12cc8-6b46-4219-ae21-2932281bf85d" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AllocatedShareBasedCompensationExpense_781eab8a-4b57-4ce6-bd29-3e7691685f08" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_AllocatedShareBasedCompensationExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsLineItems_ad26b10d-11b2-4a76-933a-55c9d1e46cfb" xlink:to="loc_us-gaap_AllocatedShareBasedCompensationExpense_781eab8a-4b57-4ce6-bd29-3e7691685f08" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.symbotic.com/role/StockBasedCompensationandWarrantUnitsNarrativeDetails" xlink:type="simple" xlink:href="sym-20250329.xsd#StockBasedCompensationandWarrantUnitsNarrativeDetails"/>
  <link:definitionLink xlink:role="http://www.symbotic.com/role/StockBasedCompensationandWarrantUnitsNarrativeDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_f09bb0b7-03b5-4953-8ef6-f2c4acde0c78" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_de18de16-ef37-4b03-a1a2-da2a46053381" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_f09bb0b7-03b5-4953-8ef6-f2c4acde0c78" xlink:to="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_de18de16-ef37-4b03-a1a2-da2a46053381" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_7ac142a0-6c2f-484c-b72e-39d7595d8d02" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_PropertyPlantAndEquipmentByTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_de18de16-ef37-4b03-a1a2-da2a46053381" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_7ac142a0-6c2f-484c-b72e-39d7595d8d02" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_7ac142a0-6c2f-484c-b72e-39d7595d8d02_default" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_PropertyPlantAndEquipmentTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_7ac142a0-6c2f-484c-b72e-39d7595d8d02" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_7ac142a0-6c2f-484c-b72e-39d7595d8d02_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_a98d2c82-0891-4e57-bf8a-de2c752f7757" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_PropertyPlantAndEquipmentTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_7ac142a0-6c2f-484c-b72e-39d7595d8d02" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_a98d2c82-0891-4e57-bf8a-de2c752f7757" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SoftwareAndSoftwareDevelopmentCostsMember_43218518-25a7-4500-b34b-3e607c71cf17" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_SoftwareAndSoftwareDevelopmentCostsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_a98d2c82-0891-4e57-bf8a-de2c752f7757" xlink:to="loc_us-gaap_SoftwareAndSoftwareDevelopmentCostsMember_43218518-25a7-4500-b34b-3e607c71cf17" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AwardTypeAxis_5a440729-d0ff-4353-8921-d3c4bbf89d2e" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_AwardTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_de18de16-ef37-4b03-a1a2-da2a46053381" xlink:to="loc_us-gaap_AwardTypeAxis_5a440729-d0ff-4353-8921-d3c4bbf89d2e" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_5a440729-d0ff-4353-8921-d3c4bbf89d2e_default" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_AwardTypeAxis_5a440729-d0ff-4353-8921-d3c4bbf89d2e" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_5a440729-d0ff-4353-8921-d3c4bbf89d2e_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_0c99b6dc-b968-4054-b044-5ed71738c751" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_AwardTypeAxis_5a440729-d0ff-4353-8921-d3c4bbf89d2e" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_0c99b6dc-b968-4054-b044-5ed71738c751" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_WarrantMember_28046f61-c7a3-46d0-b43d-eb77946c79c0" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_WarrantMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_0c99b6dc-b968-4054-b044-5ed71738c751" xlink:to="loc_us-gaap_WarrantMember_28046f61-c7a3-46d0-b43d-eb77946c79c0" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ClassOfWarrantOrRightAxis_0d6122e3-50b3-4927-9cbb-0f45eafd390a" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ClassOfWarrantOrRightAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_de18de16-ef37-4b03-a1a2-da2a46053381" xlink:to="loc_us-gaap_ClassOfWarrantOrRightAxis_0d6122e3-50b3-4927-9cbb-0f45eafd390a" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ClassOfWarrantOrRightDomain_0d6122e3-50b3-4927-9cbb-0f45eafd390a_default" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ClassOfWarrantOrRightDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_ClassOfWarrantOrRightAxis_0d6122e3-50b3-4927-9cbb-0f45eafd390a" xlink:to="loc_us-gaap_ClassOfWarrantOrRightDomain_0d6122e3-50b3-4927-9cbb-0f45eafd390a_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ClassOfWarrantOrRightDomain_d1867a6f-af06-4c6f-bec1-2b968ae5c132" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ClassOfWarrantOrRightDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_ClassOfWarrantOrRightAxis_0d6122e3-50b3-4927-9cbb-0f45eafd390a" xlink:to="loc_us-gaap_ClassOfWarrantOrRightDomain_d1867a6f-af06-4c6f-bec1-2b968ae5c132" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_sym_GreenBoxWarrantsMember_9ed33f17-3581-49da-a32d-e5ab0c2f0aca" xlink:href="sym-20250329.xsd#sym_GreenBoxWarrantsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfWarrantOrRightDomain_d1867a6f-af06-4c6f-bec1-2b968ae5c132" xlink:to="loc_sym_GreenBoxWarrantsMember_9ed33f17-3581-49da-a32d-e5ab0c2f0aca" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights_ab2217c0-0192-49d0-8458-44158c6e5ed0" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_f09bb0b7-03b5-4953-8ef6-f2c4acde0c78" xlink:to="loc_us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights_ab2217c0-0192-49d0-8458-44158c6e5ed0" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue_bec8acc7-8b03-4657-b009-9a11bb3992c2" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_f09bb0b7-03b5-4953-8ef6-f2c4acde0c78" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue_bec8acc7-8b03-4657-b009-9a11bb3992c2" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_sym_NumberOfWarrantTranches_0ae4488b-5d25-4743-9402-85d673fe75b9" xlink:href="sym-20250329.xsd#sym_NumberOfWarrantTranches"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_f09bb0b7-03b5-4953-8ef6-f2c4acde0c78" xlink:to="loc_sym_NumberOfWarrantTranches_0ae4488b-5d25-4743-9402-85d673fe75b9" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_sym_ClassOfWarrantOrRightWarrantsVestedPerTranche_7db5b66e-86fb-4f25-bca8-77e24a3c2b8a" xlink:href="sym-20250329.xsd#sym_ClassOfWarrantOrRightWarrantsVestedPerTranche"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_f09bb0b7-03b5-4953-8ef6-f2c4acde0c78" xlink:to="loc_sym_ClassOfWarrantOrRightWarrantsVestedPerTranche_7db5b66e-86fb-4f25-bca8-77e24a3c2b8a" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1_86f36e34-6c5d-4c75-870a-eb0f900e16e1" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_f09bb0b7-03b5-4953-8ef6-f2c4acde0c78" xlink:to="loc_us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1_86f36e34-6c5d-4c75-870a-eb0f900e16e1" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_WarrantsAndRightsOutstandingTerm_44228e4b-d86f-4b96-a92a-c713c868f8d5" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_WarrantsAndRightsOutstandingTerm"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_f09bb0b7-03b5-4953-8ef6-f2c4acde0c78" xlink:to="loc_us-gaap_WarrantsAndRightsOutstandingTerm_44228e4b-d86f-4b96-a92a-c713c868f8d5" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod_38ff0d77-cc56-4e09-916b-364f97c98d4d" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_f09bb0b7-03b5-4953-8ef6-f2c4acde0c78" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod_38ff0d77-cc56-4e09-916b-364f97c98d4d" xlink:type="arc" order="6"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.symbotic.com/role/SegmentandGeographicInformationRevenuebyGeographicalRegionDetails" xlink:type="simple" xlink:href="sym-20250329.xsd#SegmentandGeographicInformationRevenuebyGeographicalRegionDetails"/>
  <link:definitionLink xlink:role="http://www.symbotic.com/role/SegmentandGeographicInformationRevenuebyGeographicalRegionDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentReportingInformationLineItems_3cf5b849-3ff9-4a9a-94b4-4c613d4beb5b" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_SegmentReportingInformationLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_25c6e07e-fe5a-4403-8232-1a3ba47c67da" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_3cf5b849-3ff9-4a9a-94b4-4c613d4beb5b" xlink:to="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_25c6e07e-fe5a-4403-8232-1a3ba47c67da" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_StatementGeographicalAxis_18898e19-6f65-443c-a3d1-72727f855690" xlink:href="https://xbrl.fasb.org/srt/2024/elts/srt-2024.xsd#srt_StatementGeographicalAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_25c6e07e-fe5a-4403-8232-1a3ba47c67da" xlink:to="loc_srt_StatementGeographicalAxis_18898e19-6f65-443c-a3d1-72727f855690" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_SegmentGeographicalDomain_18898e19-6f65-443c-a3d1-72727f855690_default" xlink:href="https://xbrl.fasb.org/srt/2024/elts/srt-2024.xsd#srt_SegmentGeographicalDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_StatementGeographicalAxis_18898e19-6f65-443c-a3d1-72727f855690" xlink:to="loc_srt_SegmentGeographicalDomain_18898e19-6f65-443c-a3d1-72727f855690_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_SegmentGeographicalDomain_0640aa23-874f-4d80-ba88-30d7aa1f85b8" xlink:href="https://xbrl.fasb.org/srt/2024/elts/srt-2024.xsd#srt_SegmentGeographicalDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_StatementGeographicalAxis_18898e19-6f65-443c-a3d1-72727f855690" xlink:to="loc_srt_SegmentGeographicalDomain_0640aa23-874f-4d80-ba88-30d7aa1f85b8" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_country_US_d24f5015-2c8d-4523-b91d-c55674522aa4" xlink:href="https://xbrl.sec.gov/country/2024/country-2024.xsd#country_US"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_SegmentGeographicalDomain_0640aa23-874f-4d80-ba88-30d7aa1f85b8" xlink:to="loc_country_US_d24f5015-2c8d-4523-b91d-c55674522aa4" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_country_CA_d9683625-296e-439d-9b6c-083e288a8343" xlink:href="https://xbrl.sec.gov/country/2024/country-2024.xsd#country_CA"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_SegmentGeographicalDomain_0640aa23-874f-4d80-ba88-30d7aa1f85b8" xlink:to="loc_country_CA_d9683625-296e-439d-9b6c-083e288a8343" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NonUsMember_1356da1c-b261-421c-9f0c-7d1bc1a3c431" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_NonUsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_SegmentGeographicalDomain_0640aa23-874f-4d80-ba88-30d7aa1f85b8" xlink:to="loc_us-gaap_NonUsMember_1356da1c-b261-421c-9f0c-7d1bc1a3c431" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConcentrationRiskByBenchmarkAxis_12a48883-4c9f-436c-a595-cf6e83d16283" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ConcentrationRiskByBenchmarkAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_25c6e07e-fe5a-4403-8232-1a3ba47c67da" xlink:to="loc_us-gaap_ConcentrationRiskByBenchmarkAxis_12a48883-4c9f-436c-a595-cf6e83d16283" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConcentrationRiskBenchmarkDomain_12a48883-4c9f-436c-a595-cf6e83d16283_default" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ConcentrationRiskBenchmarkDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_ConcentrationRiskByBenchmarkAxis_12a48883-4c9f-436c-a595-cf6e83d16283" xlink:to="loc_us-gaap_ConcentrationRiskBenchmarkDomain_12a48883-4c9f-436c-a595-cf6e83d16283_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConcentrationRiskBenchmarkDomain_dc4447a8-7b1d-4990-9ac3-e96fbc830161" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ConcentrationRiskBenchmarkDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_ConcentrationRiskByBenchmarkAxis_12a48883-4c9f-436c-a595-cf6e83d16283" xlink:to="loc_us-gaap_ConcentrationRiskBenchmarkDomain_dc4447a8-7b1d-4990-9ac3-e96fbc830161" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueFromContractWithCustomerMember_ba5d98ca-46d9-41e5-a04a-bcc9e8b6ea63" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_RevenueFromContractWithCustomerMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ConcentrationRiskBenchmarkDomain_dc4447a8-7b1d-4990-9ac3-e96fbc830161" xlink:to="loc_us-gaap_RevenueFromContractWithCustomerMember_ba5d98ca-46d9-41e5-a04a-bcc9e8b6ea63" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConcentrationRiskByTypeAxis_2bf04229-d097-45b2-ab4d-23c640f46792" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ConcentrationRiskByTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_25c6e07e-fe5a-4403-8232-1a3ba47c67da" xlink:to="loc_us-gaap_ConcentrationRiskByTypeAxis_2bf04229-d097-45b2-ab4d-23c640f46792" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConcentrationRiskTypeDomain_2bf04229-d097-45b2-ab4d-23c640f46792_default" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ConcentrationRiskTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_ConcentrationRiskByTypeAxis_2bf04229-d097-45b2-ab4d-23c640f46792" xlink:to="loc_us-gaap_ConcentrationRiskTypeDomain_2bf04229-d097-45b2-ab4d-23c640f46792_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConcentrationRiskTypeDomain_b7bd0603-cb2a-44c3-887f-26b2b658dacb" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ConcentrationRiskTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_ConcentrationRiskByTypeAxis_2bf04229-d097-45b2-ab4d-23c640f46792" xlink:to="loc_us-gaap_ConcentrationRiskTypeDomain_b7bd0603-cb2a-44c3-887f-26b2b658dacb" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GeographicConcentrationRiskMember_8e760468-6b12-4bd6-8928-d546b7ff1b37" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_GeographicConcentrationRiskMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ConcentrationRiskTypeDomain_b7bd0603-cb2a-44c3-887f-26b2b658dacb" xlink:to="loc_us-gaap_GeographicConcentrationRiskMember_8e760468-6b12-4bd6-8928-d546b7ff1b37" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_d4969c70-ac92-49af-b84f-9043877288fa" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_3cf5b849-3ff9-4a9a-94b4-4c613d4beb5b" xlink:to="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_d4969c70-ac92-49af-b84f-9043877288fa" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConcentrationRiskPercentage1_80fd78a1-c65e-48d7-813b-9793179535ec" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ConcentrationRiskPercentage1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_3cf5b849-3ff9-4a9a-94b4-4c613d4beb5b" xlink:to="loc_us-gaap_ConcentrationRiskPercentage1_80fd78a1-c65e-48d7-813b-9793179535ec" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.symbotic.com/role/SegmentandGeographicInformationPropertyandEquipmentbyGeographicRegionDetails" xlink:type="simple" xlink:href="sym-20250329.xsd#SegmentandGeographicInformationPropertyandEquipmentbyGeographicRegionDetails"/>
  <link:definitionLink xlink:role="http://www.symbotic.com/role/SegmentandGeographicInformationPropertyandEquipmentbyGeographicRegionDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentReportingInformationLineItems_da33e52e-89de-42ea-a13b-fb3ed10a7cb2" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_SegmentReportingInformationLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_0d6d96a0-8996-43f0-9ede-71f972a27e47" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_da33e52e-89de-42ea-a13b-fb3ed10a7cb2" xlink:to="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_0d6d96a0-8996-43f0-9ede-71f972a27e47" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_StatementGeographicalAxis_8492cf59-3428-4a2e-8db4-bf30baff0a9e" xlink:href="https://xbrl.fasb.org/srt/2024/elts/srt-2024.xsd#srt_StatementGeographicalAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_0d6d96a0-8996-43f0-9ede-71f972a27e47" xlink:to="loc_srt_StatementGeographicalAxis_8492cf59-3428-4a2e-8db4-bf30baff0a9e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_SegmentGeographicalDomain_8492cf59-3428-4a2e-8db4-bf30baff0a9e_default" xlink:href="https://xbrl.fasb.org/srt/2024/elts/srt-2024.xsd#srt_SegmentGeographicalDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_StatementGeographicalAxis_8492cf59-3428-4a2e-8db4-bf30baff0a9e" xlink:to="loc_srt_SegmentGeographicalDomain_8492cf59-3428-4a2e-8db4-bf30baff0a9e_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_SegmentGeographicalDomain_dbfb5923-c07a-43b5-9aa9-fe980f0e561a" xlink:href="https://xbrl.fasb.org/srt/2024/elts/srt-2024.xsd#srt_SegmentGeographicalDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_StatementGeographicalAxis_8492cf59-3428-4a2e-8db4-bf30baff0a9e" xlink:to="loc_srt_SegmentGeographicalDomain_dbfb5923-c07a-43b5-9aa9-fe980f0e561a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_country_US_d75e408a-4c60-4c47-a70b-e5f9e6b66289" xlink:href="https://xbrl.sec.gov/country/2024/country-2024.xsd#country_US"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_SegmentGeographicalDomain_dbfb5923-c07a-43b5-9aa9-fe980f0e561a" xlink:to="loc_country_US_d75e408a-4c60-4c47-a70b-e5f9e6b66289" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_country_CA_74d38c7a-ae14-45d9-ba35-63df44388796" xlink:href="https://xbrl.sec.gov/country/2024/country-2024.xsd#country_CA"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_SegmentGeographicalDomain_dbfb5923-c07a-43b5-9aa9-fe980f0e561a" xlink:to="loc_country_CA_74d38c7a-ae14-45d9-ba35-63df44388796" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NonUsMember_fcc7cce0-da5c-4188-836b-d7f8df8444ec" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_NonUsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_SegmentGeographicalDomain_dbfb5923-c07a-43b5-9aa9-fe980f0e561a" xlink:to="loc_us-gaap_NonUsMember_fcc7cce0-da5c-4188-836b-d7f8df8444ec" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConcentrationRiskByBenchmarkAxis_27f17532-c138-41dc-9654-736d8125947e" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ConcentrationRiskByBenchmarkAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_0d6d96a0-8996-43f0-9ede-71f972a27e47" xlink:to="loc_us-gaap_ConcentrationRiskByBenchmarkAxis_27f17532-c138-41dc-9654-736d8125947e" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConcentrationRiskBenchmarkDomain_27f17532-c138-41dc-9654-736d8125947e_default" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ConcentrationRiskBenchmarkDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_ConcentrationRiskByBenchmarkAxis_27f17532-c138-41dc-9654-736d8125947e" xlink:to="loc_us-gaap_ConcentrationRiskBenchmarkDomain_27f17532-c138-41dc-9654-736d8125947e_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConcentrationRiskBenchmarkDomain_bdcf33eb-d158-4044-9d96-48f1c0a4e848" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ConcentrationRiskBenchmarkDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_ConcentrationRiskByBenchmarkAxis_27f17532-c138-41dc-9654-736d8125947e" xlink:to="loc_us-gaap_ConcentrationRiskBenchmarkDomain_bdcf33eb-d158-4044-9d96-48f1c0a4e848" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentMember_6184a009-fc05-4903-9fc1-06e34bdeb241" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_PropertyPlantAndEquipmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ConcentrationRiskBenchmarkDomain_bdcf33eb-d158-4044-9d96-48f1c0a4e848" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentMember_6184a009-fc05-4903-9fc1-06e34bdeb241" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConcentrationRiskByTypeAxis_60b0b3d7-92b0-4e23-b974-a27b81228be3" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ConcentrationRiskByTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_0d6d96a0-8996-43f0-9ede-71f972a27e47" xlink:to="loc_us-gaap_ConcentrationRiskByTypeAxis_60b0b3d7-92b0-4e23-b974-a27b81228be3" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConcentrationRiskTypeDomain_60b0b3d7-92b0-4e23-b974-a27b81228be3_default" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ConcentrationRiskTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_ConcentrationRiskByTypeAxis_60b0b3d7-92b0-4e23-b974-a27b81228be3" xlink:to="loc_us-gaap_ConcentrationRiskTypeDomain_60b0b3d7-92b0-4e23-b974-a27b81228be3_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConcentrationRiskTypeDomain_ca216f5b-535d-4abc-862b-d34396040487" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ConcentrationRiskTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_ConcentrationRiskByTypeAxis_60b0b3d7-92b0-4e23-b974-a27b81228be3" xlink:to="loc_us-gaap_ConcentrationRiskTypeDomain_ca216f5b-535d-4abc-862b-d34396040487" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GeographicConcentrationRiskMember_fba173af-6047-4659-a39f-97e9f35952ea" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_GeographicConcentrationRiskMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ConcentrationRiskTypeDomain_ca216f5b-535d-4abc-862b-d34396040487" xlink:to="loc_us-gaap_GeographicConcentrationRiskMember_fba173af-6047-4659-a39f-97e9f35952ea" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentNet_d4d46304-bb4b-4aaa-ba73-b8d4348c002c" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_PropertyPlantAndEquipmentNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_da33e52e-89de-42ea-a13b-fb3ed10a7cb2" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentNet_d4d46304-bb4b-4aaa-ba73-b8d4348c002c" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConcentrationRiskPercentage1_203e12c0-36f2-40e7-a25a-3b9c01994d30" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ConcentrationRiskPercentage1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_da33e52e-89de-42ea-a13b-fb3ed10a7cb2" xlink:to="loc_us-gaap_ConcentrationRiskPercentage1_203e12c0-36f2-40e7-a25a-3b9c01994d30" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.symbotic.com/role/SubsequentEventsDetails" xlink:type="simple" xlink:href="sym-20250329.xsd#SubsequentEventsDetails"/>
  <link:definitionLink xlink:role="http://www.symbotic.com/role/SubsequentEventsDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventLineItems_06cbd917-bdfc-4fb4-8bbd-b26b01bff0a0" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_SubsequentEventLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventTable_9b8eda7a-16f7-42e1-9b05-7a6a3eb2855f" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_SubsequentEventTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_SubsequentEventLineItems_06cbd917-bdfc-4fb4-8bbd-b26b01bff0a0" xlink:to="loc_us-gaap_SubsequentEventTable_9b8eda7a-16f7-42e1-9b05-7a6a3eb2855f" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventTypeAxis_6a270b14-6bbe-4aa7-8c37-aeeced85ce51" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_SubsequentEventTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_SubsequentEventTable_9b8eda7a-16f7-42e1-9b05-7a6a3eb2855f" xlink:to="loc_us-gaap_SubsequentEventTypeAxis_6a270b14-6bbe-4aa7-8c37-aeeced85ce51" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventTypeDomain_6a270b14-6bbe-4aa7-8c37-aeeced85ce51_default" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_SubsequentEventTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_SubsequentEventTypeAxis_6a270b14-6bbe-4aa7-8c37-aeeced85ce51" xlink:to="loc_us-gaap_SubsequentEventTypeDomain_6a270b14-6bbe-4aa7-8c37-aeeced85ce51_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventTypeDomain_655d2d9a-c96c-4b33-b9a6-e0c7842ff4b7" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_SubsequentEventTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_SubsequentEventTypeAxis_6a270b14-6bbe-4aa7-8c37-aeeced85ce51" xlink:to="loc_us-gaap_SubsequentEventTypeDomain_655d2d9a-c96c-4b33-b9a6-e0c7842ff4b7" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventMember_bb67a9c9-eb1b-4251-ad0f-408279e9c716" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_SubsequentEventMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SubsequentEventTypeDomain_655d2d9a-c96c-4b33-b9a6-e0c7842ff4b7" xlink:to="loc_us-gaap_SubsequentEventMember_bb67a9c9-eb1b-4251-ad0f-408279e9c716" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeAxis_1a086096-b43f-47e7-8181-555a875eb9ca" xlink:href="https://xbrl.fasb.org/srt/2024/elts/srt-2024.xsd#srt_RangeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_SubsequentEventTable_9b8eda7a-16f7-42e1-9b05-7a6a3eb2855f" xlink:to="loc_srt_RangeAxis_1a086096-b43f-47e7-8181-555a875eb9ca" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_1a086096-b43f-47e7-8181-555a875eb9ca_default" xlink:href="https://xbrl.fasb.org/srt/2024/elts/srt-2024.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_RangeAxis_1a086096-b43f-47e7-8181-555a875eb9ca" xlink:to="loc_srt_RangeMember_1a086096-b43f-47e7-8181-555a875eb9ca_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_063dac47-eb42-4596-8abb-0777a2f7632c" xlink:href="https://xbrl.fasb.org/srt/2024/elts/srt-2024.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_RangeAxis_1a086096-b43f-47e7-8181-555a875eb9ca" xlink:to="loc_srt_RangeMember_063dac47-eb42-4596-8abb-0777a2f7632c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MinimumMember_dd3838f6-8362-4d65-b7c4-133ddb44c63d" xlink:href="https://xbrl.fasb.org/srt/2024/elts/srt-2024.xsd#srt_MinimumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_063dac47-eb42-4596-8abb-0777a2f7632c" xlink:to="loc_srt_MinimumMember_dd3838f6-8362-4d65-b7c4-133ddb44c63d" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MaximumMember_b7e91411-5999-47c3-80cd-f3ac549ad6ef" xlink:href="https://xbrl.fasb.org/srt/2024/elts/srt-2024.xsd#srt_MaximumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_063dac47-eb42-4596-8abb-0777a2f7632c" xlink:to="loc_srt_MaximumMember_b7e91411-5999-47c3-80cd-f3ac549ad6ef" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringAndRelatedCostExpectedNumberOfPositionsEliminated_44b9c92c-1dcb-4f69-9c9b-0215d1f0fa33" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_RestructuringAndRelatedCostExpectedNumberOfPositionsEliminated"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SubsequentEventLineItems_06cbd917-bdfc-4fb4-8bbd-b26b01bff0a0" xlink:to="loc_us-gaap_RestructuringAndRelatedCostExpectedNumberOfPositionsEliminated_44b9c92c-1dcb-4f69-9c9b-0215d1f0fa33" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringAndRelatedCostExpectedCost1_0e60a3ce-d274-414d-b35d-a1b4aa75fcb1" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_RestructuringAndRelatedCostExpectedCost1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SubsequentEventLineItems_06cbd917-bdfc-4fb4-8bbd-b26b01bff0a0" xlink:to="loc_us-gaap_RestructuringAndRelatedCostExpectedCost1_0e60a3ce-d274-414d-b35d-a1b4aa75fcb1" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://fasb.org/us-gaap/role/eedm/ExtensibleEnumerationLists" xlink:type="simple" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-roles-2024.xsd#eedm"/>
  <link:definitionLink xlink:role="http://fasb.org/us-gaap/role/eedm/ExtensibleEnumerationLists" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetsAbstract" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_AssetsAbstract"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherAssetsNoncurrent" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OtherAssetsNoncurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsAbstract" xlink:to="loc_us-gaap_OtherAssetsNoncurrent" xlink:type="arc" order="101"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesCurrentAbstract" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_LiabilitiesCurrentAbstract"/>
    <link:loc xlink:type="locator" xlink:label="loc_sym_AccruedLiabilitiesAndOtherLiabilitiesCurrent_3d9eb01e-8d64-40fb-918a-1765225a109b" xlink:href="sym-20250329.xsd#sym_AccruedLiabilitiesAndOtherLiabilitiesCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesCurrentAbstract" xlink:to="loc_sym_AccruedLiabilitiesAndOtherLiabilitiesCurrent_3d9eb01e-8d64-40fb-918a-1765225a109b" xlink:type="arc" order="41"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://xbrl.sec.gov/ecd/role/IndividualsOnly" xlink:type="simple" xlink:href="https://xbrl.sec.gov/ecd/2024/ecd-2024.xsd#IndividualsOnly"/>
  <link:definitionLink xlink:role="http://xbrl.sec.gov/ecd/role/IndividualsOnly" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_ecd_AllIndividualsMember" xlink:href="https://xbrl.sec.gov/ecd/2024/ecd-2024.xsd#ecd_AllIndividualsMember"/>
    <link:loc xlink:type="locator" xlink:label="loc_sym_DanielaRusMember_3de65b15-b8bb-4fa7-b82d-c7818fa8cf73" xlink:href="sym-20250329.xsd#sym_DanielaRusMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ecd_AllIndividualsMember" xlink:to="loc_sym_DanielaRusMember_3de65b15-b8bb-4fa7-b82d-c7818fa8cf73" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_sym_MerlineSaintilMember_609addb0-8a2e-48cf-b626-7763dea14149" xlink:href="sym-20250329.xsd#sym_MerlineSaintilMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ecd_AllIndividualsMember" xlink:to="loc_sym_MerlineSaintilMember_609addb0-8a2e-48cf-b626-7763dea14149" xlink:type="arc" order="3"/>
  </link:definitionLink>
</link:linkbase>
