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rhombohedron

[rom-buh-hee-druh n] /ˌrɒm bəˈhi drən/
noun, plural rhombohedrons, rhombohedra
[rom-buh-hee-druh] /ˌrɒm bəˈhi drə/ (Show IPA)
1.
a solid bounded by six rhombic planes.
Origin
1830-1840
1830-40; < Greek rhómbo(s) rhombus + -hedron
Related forms
rhombohedral, adjective
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for rhombohedral

rhombohedral

/ˌrɒmbəʊˈhiːdrəl/
adjective
1.
of or relating to a rhombohedron
2.
(crystallog) another term for trigonal (sense 2)

rhombohedron

/ˌrɒmbəʊˈhiːdrən/
noun
1.
a six-sided prism whose sides are parallelograms
Word Origin
C19: from rhombus + -hedron
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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rhombohedral in Science
rhombohedral
  (rŏm'bō-hē'drəl)   
See trigonal.
rhombohedron
  (rŏm'bō-hē'drən)   
Plural rhombohedrons or rhombohedra
A prism with six faces, each a rhombus.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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