megacryst
/ˈmɛɡəkrɪst/Geology
noun
In an igneous or metamorphic rock: a crystal that is significantly larger than those in the surrounding groundmass or matrix.
Origin
1950s. From mega- + cryst-, after phenocryst, metacryst.
| 单词 | megacryst |
| 释义 | megacryst/ˈmɛɡəkrɪst/Geology noun In an igneous or metamorphic rock: a crystal that is significantly larger than those in the surrounding groundmass or matrix. Origin |
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