/ Dictionary / Index G glucosamine: Meaning and Definition of Find definitions for: glu•co•sa•mine Pronunciation: (gl-kō'su-mēn", -min), [key] — n. Biochem. an aminosugar occurring in many polysaccharides of vertebrate tissue and also as the major component of chitin. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: glucosamine (Thesaurus) glucoprotein glucosan Related Content Daily Word Quiz: careening Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language