/ Dictionary / Index A acetoin: Meaning and Definition of Find definitions for: a•cet•o•in Pronunciation: (u-set'ō-in), [key] — n. Chem. a yellowish, pleasant-smelling liquid, CHO, obtained from various carbohydrates, as glucose, by fermentation: used chiefly in the manufacture of flavors and essences. Also called Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. acetobacter acetometer Related Content Daily Word Quiz: perspicacious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language