thiosulphate

POS

Noun

HYPHEN

thi=o=sul=phate

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CIDE DICTIONARY

thiosulphate, n.

A salt of thiosulphuric acid; -- formerly called hyposulphite. [1913 Webster]

" 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]

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OXFORD DICTIONARY

thiosulphate, n. a sulphate in which one oxygen atom is replaced by sulphur.

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