Disulphate
Pronunciation : Di*sul"phate
Part of Speech : n.
Etymology : [Pref. di- + sulphate.] (Chem.) (a) A salt of disulphuric or pyrosulphuric acid; a pyrosulphate. (b) An acid salt of sulphuric acid, having only one equivalent of base to two of the acid.
Source : Webster's Unabridged Dictionary, 1913