/ Dictionary / Index B benzylidene acetone: Meaning and Definition of Find definitions for: benzyl'idene ac'etone Pronunciation: [key] — Chem. Chem. a colorless, crystalline, water-insoluble solid, CHO, having a vanillalike odor, used chiefly as a scent in the manufacture of perfume. Also called Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. benzylidene benzylidene chloride Related Content Daily Word Quiz: secular Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language