The Collaborative International Dictionary
Disulphate
Disulphate \Di*sul"phate\, n. [Pref. di- + sulphate.] (Chem.)
A salt of disulphuric or pyrosulphuric acid; a pyrosulphate.
An acid salt of sulphuric acid, having only one equivalent of base to two of the acid.
Wiktionary
disulphate
n. 1 (context chemistry English) A salt or ester of disulphuric acid or pyrosulphuric acid; a pyrosulphate. 2 (context chemistry English) An acid salt of sulphuric acid, having only one equivalent of base to two of the acid.