WordReference Random House Unabridged Dictionary of American English © 2025
radioac′tive decay′, [Physics.]
  1. Physicsdecay (def. 8).
  • 1960–65

Collins Concise English Dictionary © HarperCollins Publishers::
radioactive decay
  1. disintegration of a nucleus that occurs spontaneously or as a result of electron capture. One or more different nuclei are formed and usually particles and gamma rays are emitted
    Also called: disintegration
'radioactive decay' also found in these entries (note: many are not synonyms or translations):
activation analysis - alpha decay - alpha particle - beta particle - daughter - decay - emanation - radioactive series - radiogenic - rubidium-strontium dating - uraninite - uranium series

Forum discussions with the word(s) "radioactive decay" in the title:


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