The Collaborative International Dictionary
Double sulphide
Sulphide \Sul"phide\, n. (Chem.) A binary compound of sulphur, or one so regarded; -- formerly called sulphuret.
Double sulphide (Chem.), a compound of two sulphides.
Hydrogen sulphide. (Chem.) See under Hydrogen.
Metallic sulphide, a binary compound of sulphur with a metal.