/ Dictionary / Index A aminopeptidase: Meaning and Definition of Find definitions for: a•mi•no•pep•ti•dase Pronunciation: (u-mē"nō-pep'ti-dās", -dāz", am"u-nō-), [key] — n. Biochem. any of several intestinal hydrolytic enzymes that remove an amino acid from the end of a peptide chain having a free amino group. Cf. carboxypeptidase. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. amino group aminophenol Related Content Daily Word Quiz: effervescent Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language