Category:Trapezohedron

Trap`e*zo*he"dron, n. Etym: [nl., from trapezium + gr. (crystalloq.) (a) a solid bounded by twenty-four equal and similar trapeziums; a Tetragonal trisoctahedron. See the note under trisoctahedron. (b) a tetartohedral solid of the hexagonal system, bounded by six Trapezoidal planes. The faces of this form are common on quartz Crystals.