| 单词 | dihexagonal pyramid or prism |
| 释义 | > as lemmasdihexagonal pyramid or prism Having twelve angles, of which the first, third, fifth,…eleventh, are equal to one another, and the second, fourth, sixth,…twelfth, also equal to one another, but those of the one set not equal to those of the other; as a dihexagonal pyramid or prism. See also quot. 1864. ΚΠ 1864 Webster's Amer. Dict. Eng. Lang. Dihexagonal, consisting of two hexagonal parts united; thus, a dihexagonal pyramid is composed of two hexagonal pyramids placed base to base. 1895 N. Story-Maskelyne Crystallogr. 141 Symmetry of a form dihexagonal. 1895 N. Story-Maskelyne Crystallogr. 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. 1895 N. Story-Maskelyne Crystallogr. 278 The dihexagonal prism or hexagonal diprism. < as lemmas |
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