Definition of positron in English:

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Pronunciation: /ˈpäzəˌträn/


A subatomic particle with the same mass as an electron and a numerically equal but positive charge.
Example sentences
  • The term accelerators most commonly refers to particle accelerators, devices for increasing the velocity of subatomic particles such as protons, electrons, and positrons.
  • The full scattering amplitude is the sum of all contributions from all possible loops of photons, electrons, positrons, and other available particles.
  • The decaying atoms emit positrons, which encounter electrons and are annihilated, releasing pairs of gamma rays.


1930s: from positive + -tron.

For editors and proofreaders

Syllabification: pos·i·tron

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