/ Dictionary / Index E exoenzyme: Meaning and Definition of Find definitions for: ex•o•en•zyme Pronunciation: (ek"sō-en'zīm), [key] — n. Biochem. an enzyme, as pepsin, that functions outside the cell producing it. Also calledCf. endoenzyme. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. exodus exoergic Related Content Daily Word Quiz: paradox Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language