ion exchange resin


: an insoluble material of high molecular weight that contains groups which can be exchanged with ions in a solution with which it is in contact

Example Sentences

Recent Examples on the Web Pressure vessels hold an ion exchange resin media that filters out PFAS at a new water treatment plant along Kimberly Ave. Reuters, CNN, 10 Nov. 2022 Those disposable filters use something called ion exchange resin to filter out copper, cadmium and zinc. Dan Sweeney,, 19 July 2019

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Word History

First Known Use

1943, in the meaning defined above

Time Traveler
The first known use of ion exchange resin was in 1943

Dictionary Entries Near ion exchange resin

Cite this Entry

“Ion exchange resin.” Dictionary, Merriam-Webster, Accessed 30 Mar. 2023.

Medical Definition

ion exchange resin

: an insoluble material of high molecular weight that contains either acidic groups for exchanging cations or basic groups for exchanging anions and is used in ion-exchange processes and in medicine (as for reducing the sodium content of the body or the acidity of the stomach)
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