/ Dictionary / Index I immunoassay: Meaning and Definition of Find definitions for: im•mu•no•as•say Pronunciation: (im"yu-nō-u-sā', -as'ā, i-my"-), [key] — n. any laboratory method for detecting a substance by using an antibody reactive with it. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: immunoassay (Thesaurus) immunoadsorbent immunobiology Related Content Daily Word Quiz: procrastinate Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language