| tetrahedral | 1. Having, or composed of, four sides. 2. <chemistry> Having the form of the regular tetrahedron. Pertaining or related to a tetrahedron, or to the system of hemihedral forms to which the tetrahedron belongs. <geometry> Tetrahedral angle, a solid angle bounded or inclosed by four plane angles. See: Tetrahedron. Source: Websters Dictionary (01 Mar 1998) |
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