Tetrahedral

1 definition found

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

  Tetrahedral \Tet`ra*he"dral\, a. [See {Tetrahedron}.]
     1. Having, or composed of, four sides.
        [1913 Webster]
  
     2. (Crystallog.)
        (a) Having the form of the regular tetrahedron.


        (b) Pertaining or related to a tetrahedron, or to the
            system of hemihedral forms to which the tetrahedron
            belongs.
            [1913 Webster]
  
     {Tetrahedral angle} (Geom.), a solid angle bounded or
        inclosed by four plane angles.
        [1913 Webster]