beta decay

noun

Definition of beta decay

  1. :  a radioactive nuclear transformation governed by the weak force in which a nucleon (as a neutron) changes into a nucleon (as a proton) of the other type with the emission of either an electron and an antineutrino or a positron and a neutrino

1931

First Known Use of beta decay

1931


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contemplative of or relative to the past

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