Nife
/nʌɪf/(also NIFE, NiFe, nife)
noun
Geology. Nickel-iron; specifically the earth's core or the material composing it.
Origin
Early 20th century; earliest use found in Hertha Sollas (d. 1911). From German Nife from the chemical symbols Ni and Fe (from classical Latin ferrum iron: see ferro-); compare quot. 1909 at main sense.