anion exchanger

noun

: an anion-exchange agent that can exchange its anion with the anion or anions of a solution passed through it or that can adsorb anions in the form of acids

especially : an insoluble basic synthetic organic resin usually containing amine groups or quaternary ammonium groups

Word History

First Known Use

1941, in the meaning defined above

Love words?

You must — there are over 200,000 words in our free online dictionary, but you are looking for one that’s only in the Merriam-Webster Unabridged Dictionary.

Start your free trial today and get unlimited access to America's largest dictionary, with:

• More than 250,000 words that aren't in our free dictionary
• Expanded definitions, etymologies, and usage notes
• Advanced search features
• Ad free!