/ Dictionary / Index G glycyl: Meaning and Definition of Find definitions for: gly•cyl Pronunciation: (glī'sul), [key] — Biochem. Biochem. —adj. of or pertaining to a glycinic residue present in a polypeptide or protein. —n. the acyl radical CHNO of glycine. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. glycuronide Glyn 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