A meteorite consisting mainly of nickel and iron; an iron meteorite. Also: the mineral of which this is composed; meteoric iron. Cf. aerolite, n.…

Any of a class of stony-iron meteorites composed largely of olivine crystals enclosed in a network of nickel-iron.

Geology and Astronomy. A meteorite consisting predominantly of metal (mainly iron-nickel alloy); = iron, n.1 4; (also) the material of this.