单词 | variolite |
释义 | variolite/ˈvɛːrɪəlʌɪt/Geology noun A fine-grained igneous rock, often basaltic or andesitic, containing spherical or ovoid crystalline masses (typically pale and several millimetres in diameter) which give it a spotted or pockmarked appearance. OriginLate 18th century; earliest use found in The Monthly Review. From (i) Italian variolite. |
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