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n. A hard, brittle, corrosion-resistant, gray to white metallic element extracted from wolframite, scheelite, and other minerals, having the highest melting point and lowest vapor pressure of any metal. Tungsten and its alloys are used in high-temperature structural materials; in electrical elements, notably lamp filaments; and in instruments requiring thermally compatible glass-to-metal seals. Atomic number 74; atomic weight 183.84; melting point 3,410°C; boiling point 5,900°C; specific gravity 19.3 (20°C); valence 2, 3, 4, 5, 6. Also called wolfram. See Table at element.

n. a metallic chemical element (symbol W) with an atomic number of 74. The symbol is derived from the Latin word wolframium.

n. 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.

n. Scheelite, or calcium tungstate.

n. Metallic tungsten has been obtained by means of the electric furnace in a fused state, though not quite compact, and probably not quite pure. It is of rather bright gray color, with metallic luster, specific gravity 18.7, hard, but not sufficiently so to scratch glass, of very high melting-point and softening gradually before fusion, so that it may be welded. It is little acted on by air or water at ordinary temperature, slowly attacked by hydrochloric, hydrofluoric, or sulphuric acid, rapidly by hydrochloric or hydrofluoric acid with addition of nitric acid, and when in powder burns in the air at a red heat.

n. Chemical symbol, W; atomic weight, 183.5. A metal some of whose ores have long been known (see wolfram and scheelite), but they were supposed to be compounds of tin.

n. The native tungstate of lime.

n. a heavy grey-white metallic element; the pure form is used mainly in electrical applications; it is found in several ores including wolframite and scheelite

"But at the tip, where the electric field created by applying a voltage to the tungsten is at its maximum, N2 molecules are driven away."

tungstic ocher   

metallic element    metal   

tungsten steel    tungsten trioxid    tungsten bronze    scheelite    wolframite    huebnerite    ferberite   

tungstate   

wolfram   

niobium    titanium    vanadium    chromium    beryllium    strontium    boron    halogen    uranium    carbide