Donation

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late Middle English: via Old French from Latin donatio(n- ), from the verb donare, based on donum ‘gift’.

wiktionary

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From Middle English donacion, donation, from Middle French donation, from Latin dōnātiō(“a present”), from dōnō(“to give”), from dōnum(“a gift”). Recorded in English since the 15th century.

etymonline

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donation (n.)

"act of giving or bestowing; that which is gratuitously given, a grant or gift," mid-15c., donacioun, from Old French donacion (13c.) and directly from Latin donationem (nominative donatio) "a presenting, giving," noun of action from past-participle stem of donare "give as a gift," from donum "gift," from PIE *donum "gift," from root *do- "to give."