The Collaborative International Dictionary of English v.0.48:

Sulphide \Sul"phide\, n. (Chem.)
   A binary compound of sulphur, or one so regarded; -- formerly
   called sulphuret.
   [1913 Webster]

   Double sulphide (Chem.), a compound of two sulphides.

   Hydrogen sulphide. (Chem.) See under Hydrogen.

   Metallic sulphide, a binary compound of sulphur with a
      metal.
      [1913 Webster]