The Collaborative International Dictionary
Holosiderite
Holosiderite \Hol`o*sid"er*ite\, n. [Holo + siderite.] (Min.) Meteoric iron; a meteorite consisting of metallic iron without stony matter.
Wiktionary
holosiderite
n. (context mineralogy English) meteoric iron; a meteorite consisting of metallic iron without stony matter.