alpha ray

noun Physics.

a stream of alpha particles.

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weal
well-being, prosperity, or happiness.
the intervening time.
a somewhat prolonged, sharp, shrill cry, as of pain, fear, or surprise.
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Also called alpha radiation.

Origin of alpha ray

First recorded in 1900–05

Words nearby alpha ray

alpha iron, alpha male, alpha particle, alpha privative, alpha radiation, alpha ray, alpha receptor, alpha rhythm, alpha stock, alpha test, alpha wave
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

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

Medical 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.

Scientific 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.