beta ray

American

noun

Physics.

a stream of beta particles.

beta ray British

noun

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

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