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.

Source: Webster's Revised Unabridged Dictionary (1913)