beta decay

noun

Definition of beta decay

  1. :  a radioactive nuclear transformation governed by the weak force in which a nucleon (such as a neutron) changes into a nucleon (such 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


Learn More about beta decay


Seen and Heard

What made you want to look up beta decay? Please tell us where you read or heard it (including the quote, if possible).

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!

WORD OF THE DAY

to link together in a series or chain

Get Word of the Day daily email!

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!