Merriam-Webster Logo
SINCE 1828
Menu
dictionary thesaurus

anion exchange

noun

Definition of anion exchange

: a chemical process in which anions are exchanged or removed:
a : ion exchange in which one anion (as chloride or hydroxide) is substituted for one or more other anions (as sulfate)
b : a process in which anions in the form of acids are adsorbed by a basic substance

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!

First Known Use of anion exchange

1931, in the meaning defined above

Keep scrolling for more

Learn More about anion exchange

Statistics for anion exchange

Look-up Popularity

Time Traveler for anion exchange

The first known use of anion exchange was in 1931

See more words from the same year

Comments on anion exchange

What made you want to look up anion exchange? Please tell us where you read or heard it (including the quote, if possible).

Show Comments  Hide Comments 

WORD OF THE DAY

gritty

Listen to the pronounciation of gritty

showing courage and determination

Get Word of the Day daily email!

Test Your Vocabulary

Words for Summer: A Quiz

  • a closeup of a sunflower
  • Which of the following words means “of or relating to summer”?
Spell It

Can you spell these 10 commonly misspelled words?

TAKE THE QUIZ
SCRABBLE® Sprint

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!

Words at Play
Ask the Editors
Word Games