/ Dictionary / Index I isozyme: Meaning and Definition of Find definitions for: i•so•zyme Pronunciation: (ī'su-zīm"), [key] — n. Biochem. any of the genetically variant forms of certain enzymes that catalyze the same reaction but that may differ in activity, composition, or physical properties. Also called Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. isoxsuprine Ispahan Related Content Daily Word Quiz: spectral Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language