| 单词 | pyrene |
| 释义 | Word Frequency pyrene 1(ˈpaɪriːn) noun a solid polynuclear aromatic hydrocarbon extracted from coal tar. Formula: C16H10 Word origin C19: from pyro- + -eneWord Frequency pyrene 2(ˈpaɪriːn) noun botany any of several small hard stones that occur in a single fruit and contain a single seed each Word origin C19: from New Latin pyrena, from Greek purēn |
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