| 单词 | ditetragonal pyramid or prism |
| 释义 | > as lemmasditetragonal pyramid or prism Having eight angles, of which the first, third, fifth, and seventh, are equal to one another, and the second, fourth, sixth, and eighth, also equal to one another, but those of the one set not equal to those of the other; as a ditetragonal pyramid or prism. Cf. dihexagonal adj. ΚΠ 1879 F. Rutley Study of Rocks x. 109 The form assumed by leucite is a combination of a di-tetragonal pyramid..with a tetragonal pyramid. 1895 N. Story-Maskelyne Crystallogr. v. §112. 129 When the symmetry is complete it is ditetragonal. 1895 N. Story-Maskelyne Crystallogr. vii. §200. 248 The ditetragonal prism. < as lemmas |
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