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BNC: 31552 COCA: 25869

isomer

noun
/ˈaɪsəmə(r)/
/ˈaɪsəmər/
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  1. (chemistry化学) one of two or more compounds that have the same atoms, but in different arrangements异构体；同分异构体
  2. (physics物理) one of two or more nuclei that have the same atomic number, but different energy states同核异能素；同质异能素
    3. Word Originmid 19th cent.: from Greek isomerēs ‘sharing equally’, from isos ‘equal’ + meros ‘a share’.
BNC: 31552 COCA: 25869
BNC: 31552 COCA: 25869
BNC: 31552 COCA: 25869

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