/ Dictionary / Index H hexosan: Meaning and Definition of Find definitions for: hex•o•san Pronunciation: (hek'su-san"), [key] — n. any of a group of hemicelluloses that hydrolyze to hexoses. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. hexosamine hexose Related Content Daily Word Quiz: paradox Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language