noun
Usage: usually capitalized W
: a process in which ore (as copper ore) is smelted to matte that is then changed to metallic copper by alternate roasting and smelting in reverberatories and which is mostly superseded by Bessemer converting
noun
Usage: usually capitalized W
: a process in which ore (as copper ore) is smelted to matte that is then changed to metallic copper by alternate roasting and smelting in reverberatories and which is mostly superseded by Bessemer converting
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012