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phonon Line breaks: pho¦non
Pronunciation: /ˈfəʊnɒn/

Definition of phonon in English:


A quantum of energy or a quasiparticle associated with a compressional wave such as sound or a vibration of a crystal lattice.
Example sentences
  • This issue is related to the inhibition of carrier relaxation due to the selection rule of interaction between electrons and phonons in discrete energy level systems.
  • The broadness of the excited-state manifold is probably due to the strong electron coupling to high-frequency phonons, very recently suggested by Ihalainen et al.
  • The phonon energies are also quantized in a nanocrystal.


1930s: from Greek phōnē 'sound', on the pattern of photon.

Definition of phonon in:
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