| hypo | (n) a compound used as a fixing agent in photographic developing, Syn. sodium thiosulphate, sodium thiosulfate |
| Thiosulphate | n. (Chem.) A salt of thiosulphuric acid; -- formerly called ☞ 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 ] |
| 海波 | [海 波] hypo (loan); sodium thiosulphate Na2S2O3 used in fixing photos (formerly hyposulphite) #46,089 [Add to Longdo] |