octahedron


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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 ?
An octahedron of aluminum tubing forms the crane's support structure.
A final flurry of moves produces an octahedron again, now turned inside out.
Depending on the material, these Wulff shapes may have the form of a cylinder, a cube, an octahedron or some other polyhedron.
It is known that Mn[O.sub.2] can exist in different structural forms, [alpha]-, [beta]-, [gamma]-, [delta]-, [epsilon] and [lambda]-types and so forth, when the basic structural unit ([Mn[O.sup.6]] octahedron) is linked in different ways.
Besides spherical nanoparticles, 0D [Fe.sub.3][O.sub.4] nanomaterials with other morphologies have been prepared, such as octahedron [19, 33, 34], dodecahedron [6], and cube [35-37].
Again here we have black cubic crystals (some with small octahedron faces), again occurring in calcite seams in grayish green chlorite schist, but these crystals are not at all smooth-faced; rather, their faces are complexly adorned with angular patterns of ridges, grooves and channels--most interesting and attractive.
The specimen consists of a pale greenish gray 2.5-cm octahedron, slightly rough-faced, on a white drusy quartz matrix.
At this stand, too, was a very fine Chinese green fluorite octahedron, lacking the oil of some of the Chinese fluorite specimens, so it actually looks nice.
The Argyle diamond crystals in the collection featured here are a lovely, gemmy brown, 1.1-cm octahedron weighing about 4.4 carats, and a smaller but sharper, purplish brown octahedron measuring 6 mm.
The coordination polyhedron around Cu(II) can be described as an octahedron with slightly distorted.
Of the five Platonic solids, only the cube and the icosahedron allow for arrangements of trajectories that can form strictly fine regular stars even for charged particles, provided these have equal masses and absolute values for oppositely charged particles (neither tetrahedron, nor octahedron can form these).