Breadcrumb Home > Dictionary > Index G galactosan: Meaning and Definition of Find definitions for: ga•lac•to•san Pronunciation: (gu-lak"tu-san", -sun), [key] — n. galactan. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. galactosamine galactoscope ✖ Related Content Daily Word Quiz: centrifugal Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language