/ Dictionary / Index T triose: Meaning and Definition of Find definitions for: tri•ose Pronunciation: (trī'ōs), [key] — n. a monosaccharide that has three atoms of carbon. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: triose (Thesaurus) triolet trioxide Related Content Daily Word Quiz: vertigo Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language