noun Chemistry.

the dissociation of molecules by ionizing radiation.

Origin of radiolysis

First recorded in 1945–50; radio- + -lysis
Related formsra·di·o·lyt·ic [rey-dee-oh-lit-ik] /ˌreɪ di oʊˈlɪt ɪk/, adjective Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

British Dictionary definitions for radiolysis



chemical decomposition caused by radiation, such as a beam of electrons or X-rays
Derived Formsradiolytic (ˌreɪdɪəʊˈlɪtɪk), adjective
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

radiolysis in Medicine



n. pl ra•di•ol•y•ses (-sēz)

Molecular decomposition of a substance as a result of radiation.
Related formsra′di•o•lytic (-ə-lĭtĭk) adj.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.