noun Chemistry.
a rare, metallic element having a bright-gray color, a metallic luster, and a high melting point, 3410° C, and found in wolframite, tungstite, and other minerals: used in alloys of high-speed cutting tools, electric-lamp filaments, etc. Symbol: W; atomic weight: 183.85; atomic number: 74; specific gravity: 19.3.
Also called wolfram.

1760–70; < Swedish, equivalent to tung heavy + sten stone

tungstenic [tuhng-sten-ik] , adjective
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World English Dictionary
tungsten (ˈtʌŋstən)
Also called: wolfram a hard malleable ductile greyish-white element. It occurs principally in wolframite and scheelite and is used in lamp filaments, electrical contact points, X-ray targets, and, alloyed with steel, in high-speed cutting tools. Symbol: W; atomic no: 74; atomic wt: 183.85; valency: 2--6; relative density: 19.3; melting pt: 3422±20°C; boiling pt: 5555°C
[C18: from Swedish tung heavy + stenstone]

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Word Origin & History

rare metallic element, 1796, from Swed. tungsten "calcium tungstate," coined by its discoverer, Swed. chemist Karl Wilhelm Scheele (1742-86) from tung "heavy" + sten "stone." Used earlier as the name for calcium tungstate (1770). Atomic symbol W is from L. wolframium, from Ger. Wolfram "iron tungstate,"
of obscure etymology; it looks like "wolf-cream" (from rahm "cream"), but the second element might be from M.H.G. ram "dirty mark, soot."
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Medical Dictionary

tungsten tung·sten (tŭng'stən)
Symbol W
A hard brittle corrosion-resistant metallic element having the highest melting point of any metal and used in high-temperature structural materials and in electrical elements, notably lamp filaments. Atomic number 74; atomic weight 183.85; melting point 3,422°C; boiling point 5,555°C; specific gravity 19.3 (20°C); valence 2, 3, 4, 5, 6. Also called wolfram.

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American Heritage
Science Dictionary
tungsten   (tŭng'stən)  Pronunciation Key 
Symbol W
A hard, gray to white metallic element that is very resistant to corrosion. It has the highest melting point of all elements, and it retains its strength at high temperatures. It is used to make light-bulb filaments and to increase the hardness and strength of steel. 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 Periodic Table.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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Example sentences
Both halogen and incandescent bulbs produce light by heating a tungsten
  filament with an electrical current.
Tungsten is yellow, flash is blue, and fluorescent varies.
It features gold plated bullet-proof windows, tungsten and white gold gauges
  and bullet proof tires.
Mules are outfitted with special tungsten carbide shoes that act as the
  equivalent of studded snow tires.
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