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beta ray

American  

noun

Physics.

  1. a stream of beta particles.

beta ray British  

noun

  1. a stream of beta particles

"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
beta ray Scientific  

  1. A stream of beta particles.

Etymology

Origin of beta ray

First recorded in 1900–05

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

The electron is emitted from the nucleus as a beta ray.

From Textbooks • Jan. 1, 2017

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

From The Breath of Life by Burroughs, John

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.