| 单词 | pegmatite |
| 释义 | Word Frequency pegmatite(ˈpɛɡməˌtaɪt) noun any of a class of exceptionally coarse-grained intrusive igneous rocks consisting chiefly of quartz and feldspar: often occurring as dykes among igneous rocks of finer grain Derived forms pegmatitic (ˌpɛɡməˈtɪtɪk) adjective Word origin C19: from Greek pegma something joined together |
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