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radioactivity (18 synonym found)
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Definition of radioactivity:
(n) :
Spontaneous emission of radiation as a consequence of a nuclear reaction, or directly from the breakdown of an unstable nucleus; the radiation so emitted; including gamma rays, alpha particles, neutrons, electrons, positrons, etc
Definition of radioactivity:
(n) :
Spontaneous emission of radiation as a consequence of a nuclear reaction, or directly from the breakdown of an unstable nucleus; the radiation so emitted; including gamma rays, alpha particles, neutrons, electrons, positrons, etc