/ Dictionary / Index I immunotoxin: Meaning and Definition of Find definitions for: im•mu•no•tox•in Pronunciation: (im"yu-nō-tok'sin, i-my"-), [key] — n. Immunol. a monoclonal antibody linked to a toxin with the intention of destroying a specific target cell while leaving adjacent cells intact. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. immunotherapy immure Related Content Daily Word Quiz: sequester Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language