noun
: a compound WO 3 found naturally as tungstite, obtained by chemical treatment as a heavy yellow crystalline powder (as in the extraction of tungsten), and used chiefly in the production of tungsten powder
noun
: a compound WO 3 found naturally as tungstite, obtained by chemical treatment as a heavy yellow crystalline powder (as in the extraction of tungsten), and used chiefly in the production of tungsten powder
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012