nickeline
/ˈnɪkəliːn/ /ˈnɪk(ə)liːn/noun
1 Mineralogy = niccolite.
2 Engineering. Any of various nickel alloys or varieties of nickel silver; specifically an alloy of copper, nickel, and zinc noted for its high electrical resistivity and low thermal expansion coefficient. Also: a tin alloy containing antimony and copper.
Origin
Mid 19th century; earliest use found in Charles Shepard (1804–1886). From nickel + -ine, after French nickeline.