Rhombohedral
/ˌrɒm.boʊˈhiː.drəl/noun
Relating to a rhombohedron, a solid with six rhombus-shaped faces.
Did you know?Rhombohedral is a learned scientific formation from Greek roots, and its core shape word rhombos originally referred to a spinning object, not a crystal—proof that even math words can carry ancient motion inside them.
Etymological Timeline
Ancient Greek
Greek
ῥόμβος (rhómbos)
“A spinning top, whirl, or magical wheel-like object”
Ancient Greek
Greek
ῥόμβος + ἕδρα (rhómbos + hédra)
“Literally, a spinning-top/diamond-like form + seat, base, or face”
Late Latin / Neo-Latin
Latin
rhombohedrus
“A rhombohedron, a solid with rhombus-shaped faces”
18th–19th Century
English
rhombohedral
“Pertaining to a rhombohedron or rhombohedral crystal form”
Modern English
English
rhombohedral
“Describing a crystal or solid shaped like a rhombohedron”
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