Definition of chloroform noun from the Oxford Advanced Learner's Dictionary



BrE BrE//ˈklɒrəfɔːm//
; NAmE NAmE//ˈklɔːrəfɔːrm//
[uncountable] (symbol CHCl3)
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a clear liquid used in the past in medicine, etc. to make people unconscious, for example before an operation Word Originmid 19th cent.: from chloro- (representing chlorine) + form- from formic acid.
See the Oxford Advanced American Dictionary entry: chloroform