/ Dictionary / Index M mucoprotein: Meaning and Definition of Find definitions for: mu•co•pro•tein Pronunciation: (my"ku-prō'tēn, -tē-in), [key] — n. Biochem. a protein that yields carbohydrates as well as amino acids on hydrolysis. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. mucopolysaccharide mucopurulent Related Content Daily Word Quiz: soporific Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language