单词 | petrosilex |
释义 | petrosilex/ˌpɛtrə(ʊ)ˈsʌɪlɛks/Geology. Now rare noun Any of various hard, compact, igneous or metamorphic rocks rich in silica; especially (a) hornstone or chert; (b) felsite. OriginLate 18th century. From German Petrosilex from petro- + classical Latin silex flint, pebble. |
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