Octahedrite

Part of speech: noun

Definitions

1. A specific classification of meteorite that features an octahedral crystal arrangement with a composition primarily made of nickel and iron, often displaying intricate internal textures
2. This variety of meteorite is notable for its octahedral crystallization and consists mainly of nickel and iron, frequently showcasing distinctive internal crystalline patterns
3. A rare type of meteorite characterized by its unique octahedral crystal structure and primarily composed of nickel and iron, often revealing complex crystalline formations

Etymology: Octahedrite is a mineral name built from Greek roots: "okto" meaning eight and "hedra" meaning seat or face, so the word describes a crystal with eight faces. The "-ite" ending, from Greek "-ites," is the standard suffix mineralogists use for mineral and rock names. The term belongs to the technical vocabulary of meteoritics rather than everyday English. It names a class of iron meteorites whose internal crystal structure, revealed when the metal is cut and etched with acid, shows the characteristic pattern of an octahedron. The pattern forms slowly as nickel-rich iron cools over very long periods inside a parent body, which is why the name refers to a structure visible only in cross-section.