English

Definition of beta decay noun from the Oxford Advanced Learner's Dictionary

 

beta decay

 noun
noun
BrE BrE//ˈbiːtə dɪkeɪ//
 
; NAmE NAmE//ˈbeɪtə dɪkeɪ//
 
[uncountable] (physics)
 
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the breaking up of an atom in which an electron is given off
See the Oxford Advanced American Dictionary entry: beta decay