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]
The Collaborative International Dictionary of English. 2000.
Hyposulphite — Hy po*sul phite, n. (Chem.) (a) A salt of what was formerly called hyposulphurous acid; a thiosulphate. [Obs.] (b) A salt of hyposulphurous acid proper. [1913 Webster] … The Collaborative International Dictionary of English
hyposulphite — n. (Chemistry) salt of hyposulfurous acid; thiosulphuric acid … English contemporary dictionary
hyposulphite — /haɪpoʊˈsʌlfaɪt/ (say huypoh sulfuyt) noun Chemistry Obsolete 1. a salt of hyposulphurous acid. 2. → sodium thiosulphate. Also, hyposulfite …
hyposulphite — hyposulˈphite noun A salt of hyposulphurous acid (H2S2O4; also, in older usage H2S2O3) • • • Main Entry: ↑hypo … Useful english dictionary
sodium hyposulphite — /ˌsoʊdiəm haɪpoʊˈsʌlfaɪt/ (say .sohdeeuhm huypoh sulfuyt) noun → sodium thiosulphate. Also, sodium hyposulfite …
Sodium thiosulfate — Sodium thiosulfate … Wikipedia
Hypo — Hy po, n. [Abbrev. from hyposulphite.] (Photog.) Sodium hyposulphite, or thiosulphate, a solution of which is used as a bath to wash out the unchanged silver salts in a picture. [Colloq.] [1913 Webster] … The Collaborative International Dictionary of English
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… … The Collaborative International Dictionary of English
Photographic processing — is the chemical means by which photographic film and paper is treated after photographic exposure to produce a negative or positive image. Photographic processing transforms the latent image into a visible image, makes this permanent and renders… … Wikipedia
hydrosulphite — /haɪdroʊˈsʌlfaɪt/ (say huydroh sulfuyt) noun a salt containing S2O42 ions, hyposulphite, dithionite; short for sodium hyposulphite, which is used as a bleach. Also, hydrosulfite …
