beta particle Meaning in the Cambridge English Dictionary Cambridge dictionaries logo

Meaning of “beta particle” in the English Dictionary

"beta particle" in British English

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beta particlenoun [C]

uk   us   specialized
an ​extremelysmallpiece of ​matter with a ​positive or ​negativeelectriccharge, ​produced when a radioactiveatom is ​broken down
(Definition of beta particle from the Cambridge Advanced Learner’s Dictionary & Thesaurus © Cambridge University Press)

"beta particle" in American English

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beta particlenoun [C]

 /ˈbeɪ·t̬ə ˌpɑr·t̬ɪ·kəl/
beta (+) particle (also beta (–) particle) chemistry, physics an ​extremelysmallpiece of ​matter with a ​positive or ​negativeelectriccharge, ​produced when an ​atom is ​broken down. A beta (+) particle is the same as a ​positron; a beta (–) particle is an ​electron.
(Definition of beta particle from the Cambridge Academic Content Dictionary © Cambridge University Press)
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