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单词 octahedrid
释义 octahedrid, a. Cryst.|ɒktəˈhiːdrɪd, -ˈhɛdrɪd|
[f. as prec. + -id2.]
Applied to any plane, in a crystallographic system, which intersects all the three axes of coordinates; so called because a group of eight such planes would form an octahedron. Opposed to prismatoid and pinakoid.
1895Story-Maskelyne Crystallogr. ii. §18.
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