Wiktionary
perchlorobenzoic acid
n. 1 (context organic compound English) The fully chlorinated derivative of benzoic acid; pentachlorobenzoic acid 2 (context organic compound English) Any of three isomeric chloro- derivatives of perbenzoic acid; especially ''m-perchlorobenzoic acid'' ((term: mPCBA)) which is used as an oxidizing agent