/ Dictionary / Index G galactosamine: Meaning and Definition of Find definitions for: ga•lac•tos•a•mine Pronunciation: (gu-lak-tos'u-mēn", -min, -tō'su-), [key] — n. Biochem. an amino sugar that is a major component of glycolipids and chondroitin. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. galactorrhea galactosan Related Content Daily Word Quiz: procrastinate Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language