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Meaning of RADIOACTIVITY

Pronunciation:  `reydeeowak'tivitee

 
WordNet Dictionary
 
 Definition: 
[n]  the spontaneous emission of a stream of particles or electromagnetic rays in nuclear decay
 

RADIOACTIVITY is a 13 letter word that starts with R.

 

 Synonyms: radiation
 
 See Also: corpuscular radiation, emission, particulate radiation

 

 

 

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