radioactivity
See also: radio-activity
English
editAlternative forms
editEtymology
editFrom radioactive + -ity.
Pronunciation
editAudio (Southern England): (file)
Noun
editradioactivity (usually uncountable, plural radioactivities)
- Spontaneous emission of ionizing 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.
Related terms
editTranslations
editemission of ionizing radiation
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radiation emitted
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- The translations below need to be checked and inserted above into the appropriate translation tables. See instructions at Wiktionary:Entry layout § Translations.
Translations to be checked
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See also
editFurther reading
edit- Radioactive decay on Wikipedia.Wikipedia