<?xml version="1.0" encoding="us-ascii"?>
<!--Generated by Broadridge PROfile 23.3.1.5138 Broadridge-->
<link:linkbase xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.xbrl.org/2003/linkbase http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd" xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xbrli="http://www.xbrl.org/2003/instance" xmlns:t1="http://xbrl.org/2005/xbrldt">
  <link:roleRef roleURI="http://xbrl.sec.gov/ecd/role/PvpAdjustmentsOnly" xlink:type="simple" xlink:href="https://xbrl.sec.gov/ecd/2022q4/ecd-2022q4.xsd#PvpAdjustmentsOnly" />
  <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/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: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:definitionLink xlink:type="extended" xlink:role="http://xbrl.sec.gov/ecd/role/PvpAdjustmentsOnly">
    <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/ecd/2022q4/ecd-2022q4.xsd#ecd_AllAdjToCompMember" xlink:label="AllAdjToCompMember" xlink:title="AllAdjToCompMember" />
    <link:loc xlink:type="locator" xlink:href="amot-20230503.xsd#amot_StockAwardsTotalInSummaryCompensationTableMember" xlink:label="StockAwardsTotalInSummaryCompensationTableMember" xlink:title="StockAwardsTotalInSummaryCompensationTableMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="AllAdjToCompMember" xlink:to="StockAwardsTotalInSummaryCompensationTableMember" xlink:title="definition: AllAdjToCompMember to StockAwardsTotalInSummaryCompensationTableMember" order="1.0" />
    <link:loc xlink:type="locator" xlink:href="amot-20230503.xsd#amot_YearOverYearChangeInFairValueOfOutstandingAndUnvestedEquityAwardsMember" xlink:label="YearOverYearChangeInFairValueOfOutstandingAndUnvestedEquityAwardsMember" xlink:title="YearOverYearChangeInFairValueOfOutstandingAndUnvestedEquityAwardsMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="AllAdjToCompMember" xlink:to="YearOverYearChangeInFairValueOfOutstandingAndUnvestedEquityAwardsMember" xlink:title="definition: AllAdjToCompMember to YearOverYearChangeInFairValueOfOutstandingAndUnvestedEquityAwardsMember" order="2.0" />
    <link:loc xlink:type="locator" xlink:href="amot-20230503.xsd#amot_FairValueAsOfTheVestingDateOfEquityAwardsThatVestedDuringTheYearMember" xlink:label="FairValueAsOfTheVestingDateOfEquityAwardsThatVestedDuringTheYearMember" xlink:title="FairValueAsOfTheVestingDateOfEquityAwardsThatVestedDuringTheYearMember" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="AllAdjToCompMember" xlink:to="FairValueAsOfTheVestingDateOfEquityAwardsThatVestedDuringTheYearMember" xlink:title="definition: AllAdjToCompMember to FairValueAsOfTheVestingDateOfEquityAwardsThatVestedDuringTheYearMember" order="3.0" />
  </link:definitionLink>
</link:linkbase>