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beta particle
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noun Physics.
an electron or positron emitted from an atomic nucleus in a certain type of radioactive decay.
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Origin of beta particle
First recorded in 1900–05
Words nearby beta particle
betamethasone, betamethyl acrolein, beta-naphthylamine, Betancourt, beta-oxidation, beta particle, beta radiation, beta ray, beta receptor, beta rhythm, beta sheet
Dictionary.com Unabridged
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
How to use beta particle in a sentence
British Dictionary definitions for beta particle
beta particle
noun
a high-speed electron or positron emitted by a nucleus during radioactive decay or nuclear fission
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Scientific definitions for beta particle
beta particle
A high-speed electron or positron, usually emitted by an atomic nucleus undergoing radioactive decay. Beta particles are given off naturally by decaying neutrons in radioactive atoms and can be created in particle accelerators. Beta particles have greater speed and penetrating power than alpha particles but can be stopped by a sheet of aluminum that is 2 to 3 mm thick. See more at radioactive decay.
The American Heritage® Science Dictionary
Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.