Bisulphuret of iron
1iron-pyrites — n. (Min.) Bisulphuret of iron …
2Bisulphide — Bi*sul phide, n. [Pref. bi + sulphide.] (Chem.) A sulphide having two atoms of sulphur in the molecule; a disulphide, as in iron pyrites, FeS2; less frequently called bisulphuret. [1913 Webster] …
