/ Dictionary / Index K ketohexose: Meaning and Definition of Find definitions for: ke•to•hex•ose Pronunciation: (kē"tō-hek'sōs), [key] — n. Chem. any of a class of sugars composed of six carbon atoms and a ketone group, as fructose. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: ketohexose (Thesaurus) ketogenesis ketolysis Related Content Daily Word Quiz: apogee Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language