Muriatic

a. [ L. muriaticus pickled, from muria brine: cf. F. muriatique. ] (Chem.) Of, pertaining to, or obtained from, sea salt, or from chlorine, one of the constituents of sea salt; hydrochloric. [ 1913 Webster ]

Muriatic acid, hydrochloric acid, HCl; -- formerly called also marine acid, and spirit of salt. See hydrochloric, and the Note under Muriate. [ 1913 Webster ]