any radiation, as a stream of alpha particles or x-rays, that produces ionization as it passes through a medium.
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Origin of ionizing radiation
First recorded in 1900–05
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
British Dictionary definitions for ionizing radiation
electromagnetic or corpuscular radiation that is able to cause ionization
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 ionizing radiation
[ ī′ə-nī′zĭng ]
High-energy radiation capable of producing ionization in substances through which it passes.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.