noun
: a white crystalline salt CaWO 4 found in nature as scheelite and used chiefly in screens for radiography, in luminous paint, and in fluorescent lamps
noun
: a white crystalline salt CaWO 4 found in nature as scheelite and used chiefly in screens for radiography, in luminous paint, and in fluorescent lamps
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012