- (transitive) to remove ions from (water, etc), esp by ion exchange
WordReference Random House Unabridged Dictionary of American English © 2026
de•i•on•ize
(dē ī′ə nīz′),USA pronunciation v.t., -ized, -iz•ing. [Chem.]
de•i′on•i•za′tion, n.
de•i′on•iz′er, n.
- Chemistryto remove ions from.
- Chemistryto reassociate the ions of (an ionized gas).
- de- + ionize 1905–10
de•i′on•iz′er, n.
Collins Concise English Dictionary © HarperCollins Publishers::
de-ionize, de-ionise /diːˈaɪəˌnaɪz/ vb