The Collaborative International Dictionary
Oxymuriatic
Oxymuriatic \Ox`y*mu`ri*at"ic\, a. [Oxy (a) + muriatic: cf. F. oxymuriatique.] (Chem.) Pertaining to, or consisting of, oxygen and muriatic acid, that is, hydrochloric acid. [Archaic.]
Oxymuriatic acid, chlorine, formerly so called on the supposition that it was a compound of oxygen and muriatic acid. [Obs.]
Wiktionary
oxymuriatic
a. (context chemistry obsolete English) Pertaining to, or consisting of, oxygen and hydrochloric acid.