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Webster 1913 Edition

Tungsten

Tung′sten

(tŭng′stĕn)
,
Noun.
[Sw.
tungsten
(cf. Dan.
tungsteen
, G.
tungstein
);
tung
heavy (akin to Dan.
tung
, Icel.
þungr
) +
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.)
,
tungstite.

Webster 1828 Edition

Tungsten

TUNG'STEN

,
Noun.
In mineralogy, a mineral of a yellowish or grayish white color, of a lamellar structure, and infusible by the blowpipe. It occurs massive or crystallized, usually in octahedral crystals. This is an ore. The same name is given to the metal obtained from this ore. This metal is procured in small panes as fine as sand, of a strong metallic luster, an iron gray color, and slightly agglutinated. It is one of the hardest of the metals, and very brittle.

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