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tetrahedron |
2 definitions found From Webster's Revised Unabridged Dictionary (1913) [web1913]: Tetrahedron \Tet`ra*he"dron\, n. [Tetra- + Gr ? seat, base, fr ? to sit.] (Geom.) A solid figure inclosed or bounded by four triangles. Note: In crystallography, the regular tetrahedron is regarded as the hemihedral form of the regular octahedron. {Regular tetrahedron} (Geom.), a solid bounded by four equal equilateral triangles; one of the five regular solids. From WordNet r 1.6 [wn]: tetrahedron n : any polyhedron having four plane faces
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