Beta Particle Definition

noun

An electron or positron, especially one emitted at high energy in the decay of certain radioactive nuclei.

American Heritage

An electron or positron ejected at high velocity from the nucleus of an atom undergoing beta decay.

Webster's New World

(physics) An energetic electron or positron produced as the result of a nuclear reaction or nuclear decay.

Wiktionary

Synonyms:

Other Word Forms of Beta Particle

Singular:

beta particle

Plural:

beta-particles

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