| Noun | 1. | tetrachloride - any compound that contains four chlorine atoms per molecule carbon tet, carbon tetrachloride, perchloromethane, tetrachloromethane - a colorless nonflammable liquid used as a solvent for fats and oils; because of its toxicity its use as a cleaning fluid or fire extinguisher has declined chemical compound, compound - (chemistry) a substance formed by chemical union of two or more elements or ingredients in definite proportion by weight |