Dictionary

beta particle

noun

Definition of BETA PARTICLE

:  a high-speed electron; specifically :  one emitted by a radioactive nucleus in beta decay
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First Known Use of BETA PARTICLE

1904

Rhymes with BETA PARTICLE

Medical Dictionary

beta particle

noun

Medical Definition of BETA PARTICLE

:  a high-speed electron; specifically :  one emitted during radioactive decay of an atomic nucleus

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