- 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. - Scheelite, or calcium tungstate.
Definition
[ n.]