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tetrahedral

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Webster's 1828 Dictionary

TETRAHEDRAL

a.[See Tetrahedron. ] 1. Having four equal triangles.
2. In botany, having four sides, as a pod or silique.

Webster's 1913 Dictionary

TETRAHEDRAL

Tet `ra *he "dral, a. Etym: [See Tetrahedron. ]

1. Having, or composed of, four sides.

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. Tetrahedral angle (Geom.), a solid angle bounded or inclosed by four plane angles.

TETRAHEDRALLY

TETRAHEDRALLY Tet `ra *he "dral *ly, adv.

Defn: In a tetrahedral manner.