Sulphydrate
Pronunciation : Sul*phy"drate
Part of Speech : n.
Definition : Defn: A compound, analogous to a hydrate, regarded as a salt of sulphydric acid, or as a derivative of hydrogen sulphide in which one half of the hydrogen is replaced by a base (as potassium sulphydrate, KSH), or as a hydrate in which the oxygen has been wholly or partially replaced by sulphur.
(Chem.)
Source : Webster's Unabridged Dictionary, 1913