Breadcrumb Home > Dictionary > Index A adoptive: Meaning and Definition of Find definitions for: a•dop•tive Pronunciation: (u-dop'tiv), [key] — adj. of or involving adoption. acquired or related by adoption: an adoptive father or son. tending to adopt. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: adoptive (Thesaurus) adoption adoptive immunity ✖ Related Content Daily Word Quiz: evanescent Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language