/ Dictionary / Index E endopeptidase: Meaning and Definition of Find definitions for: en•do•pep•ti•dase Pronunciation: (en"dō-pep'ti-dās", -dāz"), [key] — n. Biochem. an enzyme that catalyzes the cleavage of a polypeptide or protein at interior positions of the amino acid chain. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. endoparasite endoperidium Related Content Daily Word Quiz: fidelity Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language