/ Dictionary / Index B bromoacetone: Meaning and Definition of Find definitions for: bro•mo•ac•e•tone Pronunciation: (brō"mō-as'i-tōn"), [key] — n. Chem. a colorless and highly toxic liquid, CHBrCOCH, used as a lachrymatory compound in tear gas and chemical warfare gas. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. bromo- bromochloromethane 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