Source : Webster's Revised Unabridged Dictionary (1913)

Disulphide \Di*sul"phide\ (?; 104), n. [Pref. di- + sulphide.]
   (Chem.)
   A binary compound of sulphur containing two atoms of sulphur
   in each molecule; -- formerly called disulphuret. Cf.
   {Bisulphide}.