/ Dictionary / Index P passive immunity,: Meaning and Definition of Find definitions for: pas'sive immu'nity Pronunciation: [key] — Immunol. Immunol. immunity resulting from the injection of antibodies or sensitized lymphocytes from another organism or, in infants, from the transfer of antibodies through the placenta or from colostrum. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. passive-dependent personality passive-matrix Related Content Daily Word Quiz: pugilist Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language