A polyhedron with eight triangular faces. The sides of a right octahedron are identical isosceles triangles. The regular octahedron is one of the five Platonic solids (along with the tetrahedron, hexahedron (cube), dodecahedron, and icosahedron). Also see polygon and vertex.

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  • Octahedron — Álbum de The Mars Volta Publicación 22 de junio de 2009 Género(s) Rock Progresivo Duración 50:03 Discográfica …   Wikipedia Español

  • Octahedron — Studioalbum von The Mars Volta Veröffentlichung 22. Juni 2009(international)/23. Juni(USA) Label Mercury …   Deutsch Wikipedia

  • Octahedron — Album par The Mars Volta Sortie 2009 Enregistrement Août 2008 Durée 75:52 Genre Rock progressif, Rock Expérimental Producteur …   Wikipédia en Français

  • Octahedron — Oc ta*he dron, n. [Gr.?, fr. ? eight side; okta (for oktw eight) + ? seat, base, from ? to sit.] (Geom.) A solid bounded by eight faces. The regular octahedron is contained by eight equal equilateral triangles. [1913 Webster] …   The Collaborative International Dictionary of English

  • octahedron — (n.) 1560s, from Gk. oktahedron, neut. of oktahedros eight sided, from okta eight (see OCTA (Cf. octa )) + hedra seat (see SEDENTARY (Cf. sedentary)). Related: Octahedral …   Etymology dictionary

  • octahedron — ► NOUN (pl. octahedra or octahedrons) ▪ a three dimensional shape having eight plane faces, in particular eight equal triangular faces. DERIVATIVES octahedral adjective …   English terms dictionary

  • octahedron — [äk΄tə hē′drən] n. pl. octahedrons or octahedra [äk΄tə hē′drə] [Gr oktaedron, neut. of oktaedros: see OCTA & HEDRON] a solid figure with eight plane surfaces: see POLYHEDRON octahedral adj …   English World dictionary

  • Octahedron — For the album by The Mars Volta, see Octahedron (album). Regular Octahedron (Click here for rotating model) Type Platonic solid Elements F = 8, E = 12 V = 6 (χ = 2) Faces by sides …   Wikipedia

  • octahedron — n. (pl. octahedrons or octahedra) 1 a solid figure contained by eight (esp. triangular) plane faces. 2 a body, esp. a crystal, in the form of a regular octahedron. Phrases and idioms: regular octahedron an octahedron contained by equal and… …   Useful english dictionary

  • octahedron — noun a polyhedron with eight faces; the regular octahedron has regular triangles as faces and is one of the Platonic solids. See Also: octahedral …   Wiktionary

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