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mid-14c., from Old French requeste (Modern French requête) "a request," from Vulgar Latin *requaesita, from Latin requisita "a thing asked for," fem. of requisitus "requested, demanded," from past participle stem of requirere (see require).
1530s, from request (n.) or from Middle French requester, from Old French requester "ask again, request, reclaim," from requeste. Related: Requested; requesting.