- Sodium hyposulphite
noun 1. another name (not in technical usage) for sodium thiosulphate
noun, Chemistry. 1. a colorless or white, crystalline, deliquescent, water-soluble solid, NaI, used chiefly in the manufacture of photographic emulsions, in organic synthesis, and as a disinfectant in veterinary medicine.
noun, Electricity. 1. sodium-vapor lamp. sodium-vapor lamp [soh-dee-uh m-vey-per] /ˈsoʊ di əmˌveɪ pər/ noun, Electricity. 1. an electric lamp in which sodium vapor is activated by current passing between two electrodes, producing a yellow, glareless light: used on streets and highways. noun 1. another name for sodium-vapour lamp
- Sodium meta-arsenite
[met-uh-ahr-suh-nahyt] /ˌmɛt əˈɑr səˌnaɪt/ noun, Chemistry. 1. sodium arsenite.