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单词 phenocryst
释义

WordReference Random House Unabridged Dictionary of American English © 2024
phe•no•cryst  (fēnə krist, fenə-),USA pronunciation n. [Petrol.]
  1. Rocksany of the conspicuous crystals in a porphyritic rock.
  • pheno- + cryst(al) 1890–95

Collins Concise English Dictionary © HarperCollins Publishers::
phenocryst /ˈfiːnəˌkrɪst ˈfɛn-/ n
  1. any of several large crystals that are embedded in a mass of smaller crystals in igneous rocks such as porphyry
Etymology: 19th Century: from pheno- (shining) + crystal
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