radioactivity

EnglishEdit

EtymologyEdit

radioactive +‎ -ity

NounEdit

radioactivity (plural radioactivities)

  1. Spontaneous emission of ionizing radiation as a consequence of a nuclear reaction, or directly from the breakdown of an unstable nucleus.
  2. The radiation so emitted; including gamma rays, alpha particles, neutrons, electrons, positrons, etc.

Related termsEdit

TranslationsEdit

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See alsoEdit

External linksEdit

Last modified on 3 April 2014, at 06:06