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.

trapezohedron

tra pe zo he dron |trəˌpēzōˈhēdrən, ˌtrapizō -trəˌpizoʊˈhidrən | ▶noun ( pl. trapezohedra |-drə | or trapezohedrons ) a solid figure whose faces are trapeziums or trapezoids. DERIVATIVES tra pe zo he dral |-drəl |adjective ORIGIN early 19th cent.: from trapezium + -hedron, on the pattern of words such as polyhedron .

trapezohedron

trapezohedron |ˌtrapɪzə (ʊ )ˈhiːdrən, -ˈhɛd -| ▶noun ( pl. trapezohedra |-drə | or trapezohedrons ) a solid figure whose faces are trapeziums or trapezoids. DERIVATIVES trapezohedral adjective ORIGIN early 19th cent.: from trapezium + -hedron, on the pattern of words such as polyhedron .