Definition of electronvolt in English:


Line breaks: elec¦tron|volt
Pronunciation: /ɪˈlɛktrɒnvəʊlt
, -vɒlt/
(abbreviation: eV)


  • A unit of energy equal to the work done on an electron in accelerating it through a potential difference of one volt.
    More example sentences
    • Its decay produces gamma rays with energies of a trillion electronvolts.
    • At today's accelerators, for example the CERN LEP accelerator, the value has been measured as 1/128 rather than 1/137 at energies corresponding to approximately 100 billion electronvolts.
    • It means that the energy of the source is of the order of a teraelectronvolt, that is, a trillion electronvolts.

More definitions of electronvolt

Definition of electronvolt in:

Get more from Oxford Dictionaries

Subscribe to remove ads and access premium resources

Word of the day tortie
Pronunciation: ˈtôrtē
a tortoiseshell cat