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tungsten |
3 definitions found From Webster's Revised Unabridged Dictionary (1913) [web1913]: Tungsten \Tung"sten\, n. [Sw. tungsten (cf. Dan. tungsteen, G. tungstein); tung heavy (akin to Dan. tung, Icel. [thorn]ungr) + sten stone. See {Stone}.] 1. (Chem.) A rare element of the chromium group found in certain minerals, as wolfram and scheelite, and isolated as a heavy steel-gray metal which is very hard and infusible. It has both acid and basic properties. When alloyed in small quantities with steel, it greatly increases its hardness. Symbol W (Wolframium). Atomic weight, 183.6. Specific gravity, 18. 2. (Min.) Scheelite, or calcium tungstate. [Obs.] {Tungsten ocher}, or {Tungstic ocher} (Min.), tungstate. From WordNet r 1.6 [wn]: tungsten n : a heavy gray-white metallic element; the pure form is used mainly in electrical applications; it is found in several ores including wolframite and scheelite [syn: {wolfram}, {W}, {atomic number 74}] From Elements database 20001107 [elements]: tungsten Symbol: W Atomic number: 74 Atomic weight: 183.85 White or grey metallic transition element, formerly called {wolfram}. Forms a protective oxide in air and can be oxidized at high temperature. First isolated by Jose and Fausto de Elhuyer in 1783.
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