| 释义 |
dihexagonal, a. Cryst.|ˌdaɪhɛkˈsægənəl|
[f. di-2 + hexagonal.]
Having twelve angles, of which the first, third, fifth,{ddd}eleventh, are equal to one another, and the second, fourth, sixth,{ddd}twelfth, also equal to one another, but those of the one set not equal to those of the other; as a dihexagonal pyramid or dihexagonal prism. See also quot. 1864.
1864Webster, Dihexagonal, consisting of two hexagonal parts united; thus, a dihexagonal pyramid is composed of two hexagonal pyramids placed base to base. 1895Story-Maskelyne Crystallog. 141 Symmetry of a form dihexagonal. Ibid. 277 Two dihexagonal quoins form the vertices of the pyramids, and are composed by edges S and σ alternating with each other, adjacent edges representing dihedral angles of different magnitude. Ibid. 278 The dihexagonal prism or hexagonal diprism. |