/ Dictionary / Index E exopeptidase: Meaning and Definition of Find definitions for: ex•o•pep•ti•dase Pronunciation: (ek"sō-pep'ti-dās", -dāz"), [key] — n. Biochem. any enzyme that catalyzes the removal of an amino acid from the end of a polypeptide chain. Cf. endopeptidase. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. exopathic exoperidium Related Content Daily Word Quiz: gregarious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language