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tungsten
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The Salt of the World?
- Tungsten - 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.
- Tungsten - n. - Scheelite, or calcium tungstate.
- Tungstenic - a. - Of or pertaining to tungsten; containing tungsten; as, tungstenic ores.
- Polytungstic - a. - Containing several tungsten atoms or radicals; as, polytungstic acid.
- Sulphotungstic - a. - Of, pertaining to, or designating, hypothetical sulphacid of tungsten (called also sulphowolframic acid), analogous to sulphuric acid, and known in its salts.