Termination

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late Middle English (in the sense ‘determination, decision’): from Old French, or from Latin terminatio(n- ), from terminare ‘to limit, end’.

wiktionary

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Borrowed from Latin terminationem (accusative of terminatio).

etymonline

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termination (n.)

late 14c., "authoritative resolution of a matter," from Old French terminacion (13c.) and directly from Latin terminationem (nominative terminatio) "a fixing of boundaries, a bounding, determining," noun of action from past-participle stem of terminare "to mark the end or boundary," from terminus "end, limit" (see terminus). Meaning "end of a person's employment" is recorded from 1961; meaning "artificial end of a pregnancy" is attested from 1969; sense of "assassination" is recorded from 1975.