Octahedron

2 definitions found

From The Collaborative International Dictionary of English v.0.48 [gcide]:

  octahedron \oc`ta*he"dron\ ([o^]k`t[.a]*h[=e]"dr[o^]n), n. [Gr.
     'okta`edron, fr. 'okta`edros eight-sided; 'okta- (for 'oktw`
     eight) + "e`dra seat, base, from "e`zesqai to sit.] (Geom.)
     A solid bounded by eight faces. The regular octahedron is
     contained by eight equal equilateral triangles.
     [1913 Webster]



From WordNet (r) 2.0 [wn]:

  octahedron
       n : any polyhedron having eight plane faces
       [also: {octahedra} (pl)]