MURIATIC ACID Meaning of MURIATIC ACID in English [ ˌmjʊərɪ'atɪk ]■ noun archaic term for hydrochloric acid .Derivativesmuriate noun OriginC17: muriatic from L. muriaticus , from muria 'brine'. Concise Oxford English vocab. Сжатый оксфордский словарь английского языка. 2004