Definition of “electron” - English Dictionary


“electron” in English

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electronnoun [ C ]

uk /iˈlek.trɒn/ us /iˈlek.trɑːn/

Examples from literature

  • An electric spark consists of a rush of electrons across the space between the two terminals. 
  • Cathode rays are electrons in rapid motion. 
  • The fixing of the wandering electron to a neutral atom creates a negative ion. 
  • The principal remedy is heat, because it engenders a higher rate of vibration of the electrons. 
  • We have seen that an electric current is really a flow of electrons. 

(Definition of “electron” from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)

“electron” in American English

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electronnoun [ C ]

us /ɪˈlek·trɑn/

physics, chemistry the part of an atom with a negative electrical charge, which moves around the atom's nucleus (= central part)

(Definition of “electron” from the Cambridge Academic Content Dictionary © Cambridge University Press)