ˈmish- noun
Etymology: German mischmetall, from mischen to mix (from Old High German miskan, from Latin miscēre ) + metall metal, from Middle High German metalle, from Latin metallum — more at mix , metal
: a pyrophoric alloy that consists of a crude mixture of cerium, lanthanum, neodymium, and other rare-earth metals in the approximate ratio in which they occur in monazite sand and that is obtained usually by electrolysis of the fused mixed chlorides of the metals