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Scheelite, or calcium tungstate. [Obs.] Tungsten ocher, or Tungstic ocher (Min.), tungstate.

An electric glow lamp having filaments of metallic tungsten. Such lamps, owing to the refractory nature of the metal, may be maintained at a very high temperature and require an expenditure of only about 1.25 watts per candle power.

A steel containing a small amount of tungsten, noted for tenacity and hardness, even under a considerable degree of heat. Magnets made of it are said to be highly permanent. It often contains manganese.

Of or pertaining to tungsten; containing tungsten; as, tungstenic ores. [R.]

quantity of some other metal alloyed with the iron, usually chromium, nickel, manganese, tungsten, or vanadium.

Wolfram, an ore of tungsten. Simmonds.

An alloy consisting of copper, nickel, tungsten, and aluminium; -- used by jewelers.

An alloy of German silver containing tungsten; -- used for forming electrical resistance coils and standards.

Containing several tungsten atoms or radicals; as, polytungstic acid. Polytungstic acid (Chem.), any one of several complex acids of tungsten containing more than one atom of tungsten.

The metal tungsten. [Obs.]

te rapidity, without quenching. Such steels are alloys of iron and carbon with manganese, tungsten and manganese, chromium, molybdenum and manganese, etc. They are chiefly used as high-speed steels. -- Self`-hard"en*ed, a.

Of, pertaining to, or designating, any one of a series of double acids of silicon and tungsten, known in the free state, and also in their salts (called silicotungstates).

Of, pertaining to, or designating, hypothetical sulphacid of tungsten (called also sulphowolframic acid), analogous to sulphuric acid, and known in its salts.

Of or pertaining to tungsten; derived from, or resembling, tungsten; wolframic; as, tungstic oxide. Tungstic acid, an acid of tungsten, H2WO4, analogous to sulphuric and chromic acids.

The oxide of tungsten, a yellow mineral occurring in a pulverulent form. It is often associated with wolfram.

Same as Tungsten steel.

The technical name of the element tungsten. See Tungsten.