oxymuriatic, a. [Oxy- (a) + muriatic: cf. F. oxymuriatique.].
Pertaining to, or consisting of, oxygen and muriatic acid, that is, hydrochloric acid. [1913 Webster]
Oxymuriatic acid, chlorine, formerly so called on the supposition that it was a compound of oxygen and muriatic acid. [Obs.]