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Classic usage
Reading level: hard
Estimated CEFR level: C2 — Proficiency
Estimated from word frequency; not an official CEFR classification.
Borrowed from French chloroforme, portmanteau of terchloride (tertiary chloride, trichloride) and formyle (CH, an obsolete radical of formic acid) by Jean-Baptiste Dumas, from 1834. By surface analysis, chloro- + -form.
trichloromethane
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Classic usage
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