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beta ray

noun

, Physics.
  1. a stream of beta particles.

beta ray

noun

  1. a stream of beta particles

beta ray

  1. A stream of beta particles.

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Word History and Origins

Origin of beta ray1

First recorded in 1900–05

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Example Sentences

The beta ray of radium will penetrate solid iron a foot thick, a feat that would give a spirit pause.

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beta radiationbeta receptor

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