| 单词 |
pedion |
| 释义 |
pedion Cryst.|ˈpɛdɪɒn| Pl. pedia. [a. Gr. πεδίον a plain, a flat surface.] A term introduced to denote any face of an anorthic crystal; each face being bounded by a set of faces of which no two are necessarily parallel, and which are connected only by a law of rational indices.
1899W. J. Lewis Crystallogr. xi. 148 Each form consists of a single face, and will be called a pedion. |

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