• synonyms

annihilation radiation

See more synonyms for annihilation radiation on Thesaurus.com
noun Physics.
  1. electromagnetic radiation produced by the coalescence and mutual annihilation of a positron and an electron, each pair forming two photons having a minimum energy of 0.5 million electron volts each.
Show More

Origin of annihilation radiation

First recorded in 1960–65
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018