definitions

alpha ray

noun Physics.

a stream of alpha particles.

Nearby words

alpha iron, alpha male, alpha particle, alpha privative, alpha radiation, alpha ray, alpha receptor, alpha rhythm, alpha stock, alpha test, alpha wave

Origin of alpha ray

First recorded in 1900–05
Also called alpha radiation.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

British Dictionary definitions for alpha ray

alpha ray

noun

ionizing radiation consisting of a stream of alpha 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

Medicine definitions for alpha ray

alpha ray

n.

A stream of alpha particles or a single high-speed alpha particle.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

Science definitions for alpha ray

alpha ray

A stream of alpha particles.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.