| 释义 |
ˌicosiˌtetraˈhedron Geom. and Cryst.
[f. Gr. εἴκοσι twenty + τετρα- four + ἕδρα seat, base (cf. tetrahedron).]
A solid figure contained by twenty-four plane faces; esp. a form contained by twenty-four equal symmetrical trapeziums or deltoids, also called deltohedron or trapezohedron.
1831Brewster Optics xxv. 214 The most common form of the analcime is the solid called the icositetrahedron, which is bounded by twenty-four equal and similar trapezia. 1879Rutley Stud. Rocks x. 140 All the members of this group crystallise in the cubic system, the common forms being either the rhombic dodecahedron or the icositetrahedron.
So icositetraˈhedroid.
1880Academy 30 Oct. 314 Four-dimensional space may be built up with..ikosatetrahedroids. |