| 单词 | octahedron |
| 释义 | octahedron n. (pl. octahedrons or octahedra) 1. a solid figure contained by eight (esp. triangular) plane faces. 2. a body, esp. a crystal, in the form of a regular octahedron. Phrases and idioms regular octahedron an octahedron contained by equal and equilateral triangles. Derivatives octahedral adj. Etymology: Gk oktaedron (as OCTA-, -HEDRON) |
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