The Collaborative International Dictionary
kupfernickel
Niccolite \Nic"co*lite\, n. [from NL. niccolum nickel.] (Min.) A mineral of a copper-red color and metallic luster; an arsenide of nickel; -- called also coppernickel, kupfernickel.
Wiktionary
kupfernickel
n. (context archaic English) cupronickel
Usage examples of "kupfernickel".
Kupfernickel and chloanthite are arsenides of nickel with, generally, more or less iron and cobalt.