- to become changed into the form of ions, as by dissolving.
Also especially British, i·on·ise.
Origin of ionize
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for ionised
Such electrified atoms are absent from the sugar solution: sugar does not become "ionised" when it is dissolved.The Birth-Time of the World and Other Scientific Essays
J. (John) Joly
- to change or become changed into ions
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
Word Origin and History for ionised
Online Etymology Dictionary, © 2010 Douglas Harper
- To dissociate atoms or molecules into electrically charged atoms or radicals.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
- To give an atom or group of atoms a net electric charge by adding or removing one or more electrons.
- To form ions in a substance. Lightning ionizes air, for example.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.