Definition of exciton in English:


Line breaks: ex|citon
Pronunciation: /ˈɛksɪtɒn
, ɪkˈsʌɪ-, ɛk-/


A mobile concentration of energy in a crystal formed by an excited electron and an associated hole.
More example sentences
  • As the group intensified optical stimulation during the experiments, though, the number of excitons increased and the electron/electron-hole pairs cancelled each other.
  • The injected electrons and holes combine to form excitons, or electron-hole pairs, bound together by their mutual attraction.
  • Some of these excitons emit light when they decay to the ground state.


1930s: from excitation + -on.

Definition of exciton in:

Get more from Oxford Dictionaries

Subscribe to remove adverts and access premium resources

Word of the day retroflex
Pronunciation: ˈrɛtrə(ʊ)flɛks
turned backwards