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octahedron

oc·ta·he·dron

 (ŏk′tə-hē′drən)
n. pl. oc·ta·he·drons or oc·ta·he·dra (-drə)
A polyhedron with eight faces.

[Greek oktaedron, from neuter of oktaedros, having eight sides : okta-, octo- + -edros, sided; see -hedron.]
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

octahedron

or

octohedron

n, pl -drons or -dra (-drə)
(Mathematics) a solid figure having eight plane faces
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014

oc•ta•he•dron

(ˌɒk təˈhi drən)

n., pl. -drons, -dra (-drə).
a solid figure having eight faces.
[1560–70; < Greek oktáedron eight-sided =okta- octa- + -edron -hedron]
oc`ta•he′dral, adj.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.

oc·ta·he·dron

(ŏk′tə-hē′drən)
A three-dimensional geometric figure with eight triangular faces.
The American Heritage® Student Science Dictionary, Second Edition. Copyright © 2014 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.octahedron - any polyhedron having eight plane facesoctahedron - any polyhedron having eight plane faces
polyhedron - a solid figure bounded by plane polygons or faces
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.
Translations
oktaedri
oktaéder
octaedro
oktaeder

octahedron

[ˈɒktəˈhiːdrən] N (octahedrons or octahedra (pl)) [ˈɒktəˈhiːdrə]octaedro m
Collins Spanish Dictionary - Complete and Unabridged 8th Edition 2005 © William Collins Sons & Co. Ltd. 1971, 1988 © HarperCollins Publishers 1992, 1993, 1996, 1997, 2000, 2003, 2005

octahedron

nOktaeder m, → Achtflächner m
Collins German Dictionary – Complete and Unabridged 7th Edition 2005. © William Collins Sons & Co. Ltd. 1980 © HarperCollins Publishers 1991, 1997, 1999, 2004, 2005, 2007
References in periodicals archive ?
For the ZnO6 and WO6 octahedra, the symmetric and asymmetric deformation modes of the W-O and Zn-O bonds are observed at 560 and 432 [cm.sup.-1], respectively [3].
Clay minerals have a layered structure at the nanoscale, and each layer consists of some combinations of two layer types with silicon tetrahedra and aluminum octahedra as basic units [1, 2].
Recently, theoretical predictions and experimental results confirmed that the TaS2 built from the edge-sharing of Ta[S.sub.6] trigonal prisms exhibits superior catalytic performance in comparison with that of Ta[S.sub.6] octahedra [6, 7].
This compound have three crystalline phases: rutile (tetragonal structure), anatase (octahedral structure), brookite (orthorhombic structure), which according to the requirement of the electrostatic valence rule, each oxygen atom is shared by three octahedra. For rutile each octahedron has two sides common with other octahedra; in brookite three and for anatase four sides shared by others octahedra.
Moreover, high frequency modes between 260 and 684 [cm.sup.-1] are attributed to Mn-O bending and stretching motion of the distorted octahedra and square pyramidal building block units.
As is shown in Fig 1a, MIL-53(Al) is consisted of infinite trans chains of AlO4(OH)2 octahedra interconnected by the 1,4-benzenedicarboxylate.
Different values SA between VerB05 and Ver-SL05 were influenced by the nature of the cations in the interlayer and [Mg.sup.2+] in the octahedra, which were leached into the water.
Thenardite belongs to [F.sub.ddd] space group with octahedral structure of nearly regular S[O.sub.4] tetrahedra and distorted Na[O.sub.6] octahedra. The sodium atoms are each surrounded by 6 oxygen atoms each at 2.334 [Angstrom], 2.426 [Angstrom], and 2.534 [Angstrom] forming distorted Na[O.sub.6] octahedra with a two fold axis parallel to c-axis.