adjective Date: 1788 of, relating to, or containing phosphorus especially with a valence lower than in phosphoric compounds

New Collegiate Dictionary. 2001.

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  • Phosphorous — Phos phor*ous (f[o^]s f[o^]r*[u^]s), a. [Cf. F. phosphoreux.] (Chem.) Of or pertaining to phosphorus; resembling or containing phosphorus; specifically, designating those compounds in which phosphorus has a lower valence as contrasted with… …   The Collaborative International Dictionary of English

  • phosphorous — (adj.) 1777, phosphorescent, from PHOSPHORUS (Cf. phosphorus) + OUS (Cf. ous). The chemical sense (1794) is immediately from Fr. phosphoreux …   Etymology dictionary

  • phosphorous — [fäs′fə rəs, fäs fôr′əs] adj. [ PHOSPHOR(US) + OUS] 1. rare var. of PHOSPHORESCENT 2. [Fr phosphoreux] of, like, or containing phosphorus, esp. trivalent phosphorus …   English World dictionary

  • phosphorous — phosphorus, phosphorous Phosphorus is the noun for the chemical element, and phosphorous is the adjective meaning ‘containing phosphorus’ …   Modern English usage

  • phosphorous — phosphorus ► NOUN ▪ a poisonous non metallic chemical element existing as a yellowish waxy solid which ignites spontaneously in air and glows in the dark, and as a less reactive form used in making matches. DERIVATIVES phosphorous adjective.… …   English terms dictionary

  • phosphorous — [ fɒsf(ə)rəs] adjective 1》 relating to or containing phosphorus.     ↘Chemistry of phosphorus with a valency of three. 2》 phosphorescent. Usage The correct spelling for the noun denoting the chemical element is phosphorus, while the adjective is… …   English new terms dictionary

  • phosphorous acid — n. a white or yellowish, crystalline acid, H3PO3, that absorbs oxygen readily: used as a chemical reducing agent and as an analytical reagent …   English World dictionary

  • Phosphorous acid — Chembox new ImageFile = Phosphonic acid 3D balls A.png ImageSize = 150px ImageName = Phosphonic acid ImageFile1 = Phosphonic acid 2D dimensions.png ImageSize1 = 150px ImageName1 = Phosphonic acid IUPACName = phosphonic acid… …   Wikipedia

  • phosphorous acid — Chem. a colorless, crystalline, water soluble acid of phosphorus, H3PO3, from which phosphites are derived. [1785 95] * * * ▪ chemical compound (H3PO3),also called  Orthophosphorous Acid,         one of several oxygen acids of phosphorus, used as …   Universalium

  • phosphorous acid — H3PO3; its salts are phosphites. * * * phosphorous acid n a deliquescent crystalline acid H3PO3 used esp. as a reducing agent and in making phosphites * * * phos·pho·rous ac·id (fos forґəs) a reducing inorganic acid, H3PO3, which readily… …   Medical dictionary

  • phosphorous diffusion source — fosforo difuzijos šaltinis statusas T sritis radioelektronika atitikmenys: angl. phosphorous diffusion source vok. Phosphordiffusionsquelle, f rus. диффузионный источник фосфора, m pranc. source de diffusion de phosphore, f …   Radioelektronikos terminų žodynas

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