/ Dictionary / Index C coenzyme: Meaning and Definition of Find definitions for: co•en•zyme Pronunciation: (kō-en'zīm), [key] — n. Biochem. a molecule that provides the transfer site for biochemical reactions catalyzed by an enzyme. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: coenzyme (Thesaurus) coenosarc coenzyme A Related Content Daily Word Quiz: cautious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language