/ Dictionary / Index M mucopolysaccharide: Meaning and Definition of Find definitions for: mu•co•pol•y•sac•cha•ride Pronunciation: (my"kō-pol"ē-sak'u-rīd", -rid), [key] — n. (formerly) glycosaminoglycan. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: mucopolysaccharide (Thesaurus) mucolytic mucoprotein Related Content Daily Word Quiz: clairvoyant Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language