verb (used with object), de·i·on·ized, de·i·on·iz·ing. Chemistry.

to remove ions from.
to reassociate the ions of (an ionized gas).

Also especially British, de·i·on·ise.

Origin of deionize

First recorded in 1905–10; de- + ionize
Related formsde·i·on·i·za·tion, nounde·i·on·iz·er, noun Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

British Dictionary definitions for de-ionize




(tr) to remove ions from (water, etc), esp by ion exchange
Derived Formsdeionization or deionisation, noun
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