'Thiosulphate' definitions:
Definition of 'Thiosulphate'
From: GCIDE
- Thiosulphate \Thi`o*sul"phate\, n. (Chem.) A salt of thiosulphuric acid; -- formerly called hyposulphite. [1913 Webster]
- Note: The sodium salt called in photography by the name sodium hyposulphite, being used as a solvent for the excess of unchanged silver chloride, bromide, and iodide on the sensitive plate. [1913 Webster]