radioactivity
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See also: radio-activity
English[edit]
Alternative forms[edit]
Etymology[edit]
radioactive + -ity
Noun[edit]
radioactivity (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[edit]
Translations[edit]
emission 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[edit]
Further reading[edit]
- Radioactive decay on Wikipedia.Wikipedia