verb (used with object), i·on·ized, i·on·iz·ing.
- to separate or change into ions.
- to produce ions in.
verb (used without object), i·on·ized, i·on·iz·ing.
- to become changed into the form of ions, as by dissolving.
Also especially British, i·on·ise.
Origin of ionize
Related formsi·on·iz·a·ble, adjectivei·on·i·za·tion, nouni·on·iz·er, nounnon·i·on·ized, adjectivenon·i·on·iz·ing, adjectiveself-i·on·i·za·tion, nounun·i·o·nized, adjectiveun·un·ion·ized, adjective
First recorded in 1895–1900; ion
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for ionize
Historical Examples of ionize
Organic compounds, on the other hand, ionize only very slowly, if at all.
Second, the upper atmosphere of Eisberg was pretty much pure hydrogen, which is somewhat easier to ionize than oxygen or nitrogen.
Certain ultra-violet rays also ionize the air and cause the formation of ozone.
British Dictionary definitions for ionize
Derived Formsionizable or ionisable, adjective
- 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 ionize
1896, from ion + -ize. Related: Ionized; ionizing.
Online Etymology Dictionary, © 2010 Douglas Harper
Related formsi′on•iz′er n.
- 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.