Muriatic \Mu`ri*at"ic\, 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. {Muriatic acid}, hydrochloric acid, {HCl}; -- formerly called also {marine acid}, and {spirit of salt}. See {hydrochloric}, and the Note under {Muriate}.
muriatic acid n : a former name for hydrochloric acid