/ Dictionary / Index A adoptive immunity: Meaning and Definition of Find definitions for: adop'tive immu'nity Pronunciation: [key] passive immunity resulting from the administration of sensitized lymphocytes from an immune donor. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. adoptive adorable Related Content Daily Word Quiz: immense Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language