| 单词 | icosahedron |
| 释义 | icosahedron —icosahedral, adj. /uy koh'seuh hee"dreuhn, uy kos'euh-/, n. , pl. icosahedrons, icosahedra /-dreuh/. a solid figure having 20 faces. [1560-70; < Gk eikosáedron, equiv. to eikosa- (var. of eikosi-, comb. form of eíkosi twenty) + -edron -HEDRON] |
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