Cryst. [f. Gr. τετράκις four times + DODECAHEDRON.] A solid body bounded by forty-eight triangular planes; also called HEXAKISOCTAHEDRON, octakis-hexahedron, tetrakonta-octahedron, and forty-eight scalenohedron; esp. the variety of this described in quot.
1895. Story-Maskelyne, Crystallogr., 204. The complete form has the character of a pyramidion developement of the rhomb-dodecahedron, each face of the latter figure being surmounted by a rhomb-based pyramid, to which it forms a conterminous base. These therefore are the forms that may be correctly designated as tetrakisdodecahedra or dodecahedrid pyramidions.
