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.]

octahedron

or

octohedron

n, pl -drons or -dra (-drə)
(Mathematics) a solid figure having eight plane faces

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.

oc·ta·he·dron

(ŏk′tə-hē′drən)
A three-dimensional geometric figure with eight triangular faces.
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
Translations
oktaedri
oktaéder
octaedro
oktaeder

octahedron

[ˈɒktəˈhiːdrən] N (octahedrons or octahedra (pl)) [ˈɒktəˈhiːdrə]octaedro m

octahedron

nOktaeder m, → Achtflächner m
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.
The special category rough diamonds recovered include: one high quality 18.45 carat gem octahedron rough diamond, two gem quality rough diamonds weighing 18.56 and 14.71 carats respectively, and three non-gem quality rough diamond weighing 21.92 carats, 17.32 carats, and 15.84 carats.
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).