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annihilation radiation
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noun Physics.
electromagnetic radiation produced by the coalescence and mutual annihilation of an atomic particle and its antiparticle, generally a positron and an electron, each pair forming two photons having a minimum energy of 0.5 million electron volts each.
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Origin of annihilation radiation
First recorded in 1960–65
Words nearby annihilation radiation
Annie Oakley, Annigoni, annihilable, annihilate, annihilation, annihilation radiation, annihilator, Anniston, anniv., anniversary, anniversary day
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Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023