| 单词 | trigonal trapezohedron |
| 释义 | > as lemmastrigonal trapezohedron A solid figure whose faces are trapeziums or trapezoids; as the icositetrahedron or deltohedron, with 24 faces, and the trigonal trapezohedron, with 6. ΘΚΠ the world > relative properties > number > geometry > shape or figure > [noun] > three-dimensional > contained by quadrilaterals trapezoid1704 trapezohedron1822 1822 P. Cleaveland Elem. Treat. Mineral. & Geol. (ed. 2) I. 361 Another form [in garnet] is a trapezoedron, or a solid presenting twenty four equal and similar, trapezoidal faces. 1828 N. Webster Amer. Dict. Eng. Lang. Trapezihedron, a solid bounded by twenty-four equal and similar trapeziums. 1847 Webster's Amer. Dict. Eng. Lang. Trapezohedron. 1895 N. Story-Maskelyne Crystallogr. vii. §257 The trigonal trapezohedron. 1895 N. Story-Maskelyne Crystallogr. vii. §274 The trapezohedra that occur on quartz belong to two correlative groups. < as lemmas |
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