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electron

noun
🔊/ɪˈlektrɒn/
🔊/ɪˈlektrɑːn/
 (physics物理)
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  1. a very small piece of matter (= a substance) with a negative electric charge, found in all atoms 电子see also neutron, proton
    Wordfinder
    Topics Physics and chemistryc1
    Oxford Collocations DictionaryElectron is used before these nouns:
    • beam
    • microscope
    • transfer
    • …
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    Word Originlate 19th cent.: from electric + -on.