/ Dictionary / Index H heterologous: Meaning and Definition of Find definitions for: het•er•ol•o•gous Pronunciation: (het"u-rol'u-gus), [key] — adj. of different origin; pertaining to heterology. consisting of dissimilar tissue, as that of another species or that of a tumor. pertaining to an antigen that elicits a reaction in a nonspecific antibody. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: heterologous (Thesaurus) heterolecithal heterology Related Content Daily Word Quiz: crutiny Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language