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bromoacetone

American  
[broh-moh-as-i-tohn] / ˌbroʊ moʊˈæs ɪˌtoʊn /

noun

Chemistry.
  1. a colorless and highly toxic liquid, CH 2 BrCOCH 3 , used as a lachrymatory compound in tear gas and chemical warfare gas.


Etymology

Origin of bromoacetone

bromo- + acetone