Definition of photon in English:

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photon

Pronunciation: /ˈfōtän/

noun

Physics
A particle representing a quantum of light or other electromagnetic radiation. A photon carries energy proportional to the radiation frequency but has zero rest mass.
Example sentences
  • The world of the realist is populated by electrons and photons, quarks and gluons.
  • Until now, physicists have only been able to entangle photons, electrons and atoms, using different methods in each case.
  • A photon has zero rest mass, but it carries energy and momentum.

Origin

Early 20th century: from Greek phōs, phōt- 'light', on the pattern of electron.

Words that rhyme with photon

proton

For editors and proofreaders

Syllabification: pho·ton

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