Tungsten
Tung"sten
(tng"stn), n. [Sw. tungsten (cf. Dan. tungsteen, G. tungstein); tung heavy (akin to Dan. tung, Icel. 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.[1913 Webster]
2.
(Min.) Scheelite, or calcium tungstate.
[Obs.]
[1913 Webster]
Tungsten ocher,
or
Tungstic ocher
(Min.), tungstite.
[1913 Webster]
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