Adoptive
来自Big Physics
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late Middle English: via Old French from Latin adoptivus, from adoptare ‘select for oneself’ (see adopt).
wiktionary
adopt + -ive
etymonline
adoptive (adj.)
early 15c., adpotif, "by adoption," from Old French adoptif and directly from Latin adoptivus "pertaining to adoption," from stem of adoptere "to choose, adopt" (see adopt).