hypostyle

& s. [Gr. hypo stylos resting on pillars beneath: hypo =under, and stylos =a pillar.] A. As adjective: Arch.: Having the roof supported by pillars. B. As substantive: Arch .: A porch of a building supported by pillars; a covered colonnade; a pillared hall. hy-pô-sŭl-phite, s. [Pref. hypo- , and Eng. sul phite.] Chemistry: 1. A salt of hyposulphurous acid. *2. A name given formerly to a thiosulphate. The most important salt is thiosulphate of sodium, which is used in medicine under the name of hyposulphite of sodium. hyposulphite of sodium, s. Pharm.: Na2S2O3. The chemical properties and methods of preparing this salt are described under Thiosulphate of sodium. It is given in cases of sarcinous vomiting to check fermentation, and as an external application in parasitic skin diseases. It is not irritating like sulphurous acid. It is also used as an an tich lore for removing the last traces of chlorine from bleached goods, and in photography for di olving salts of silver, which are insoluble in water.