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