noun Chemistry.
- a colorless liquid, C2Cl4O2, usually derived from methyl formate or methyl chloroformate by chlorination: a World War I poison gas now used chiefly in organic synthesis.
noun
- an oily liquid with an extremely poisonous vapour, made by treating methanol with phosgene and chlorinating the product: has been used in chemical warfare. Formula: ClCOOCCl 3
n.
- A colorless liquid that is used in organic synthesis and whose vapor was used as a poison gas in World War I.trichlormethyl chloroformate