cupronickel

noun
cu·pro·nick·el | \ˌkyü-prō-ˈni-kəl, ˌkü-\

Definition of cupronickel 

: an alloy of copper and nickel especially : one containing about 70 percent copper and 30 percent nickel

First Known Use of cupronickel

1900, in the meaning defined above

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The first known use of cupronickel was in 1900

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