Dictionary.com

anion

[ an-ahy-uhn ]
/ ˈænˌaɪ ən /
Save This Word!
noun Physical Chemistry.
a negatively charged ion, as one attracted to the anode in electrolysis.
any negatively charged atom or group of atoms (opposed to cation).
QUIZ
QUIZ YOURSELF ON AFFECT VS. EFFECT!
In effect, this quiz will prove whether or not you have the skills to know the difference between “affect” and “effect.”
Question 1 of 7
The rainy weather could not ________ my elated spirits on my graduation day.
affect
effect
TAKE THE QUIZ TO FIND OUT
Meet Grammar CoachWrite or paste your essay, email, or story into Grammar Coach and get grammar helpImprove Your Writing
Meet Grammar CoachImprove Your Writing
Write or paste your essay, email, or story into Grammar Coach and get grammar help

Origin of anion

1825–35; <Greek, neuter of aniṓn going up (present participle of aniénai to go up), equivalent to an-an-3 + -i- go + -ōn present participle suffix

OTHER WORDS FROM anion

an·i·on·ic [an-ahy-on-ik], /ˌæn aɪˈɒn ɪk/, adjectivean·i·on·i·cal·ly, adverb

Words nearby anion

anime, animism, animis opibusque parati, animosity, animus, anion, anion exchange, anion-exchange resin, anion gap, anionic detergent, aniridia
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2022

learn more about anion

“Cation” vs. “Anion”: The Difference Between Them Is ElectrifyingIf you often confuse "cation" and "anion," then you can recharge your memory with this explanation on their different meanings and how to use them.
READ MORE

How to use anion in a sentence

British Dictionary definitions for anion

anion
/ (ˈænˌaɪən) /
noun
a negatively charged ion; an ion that is attracted to the anode during electrolysisCompare cation

Derived forms of anion

anionic (ˌænaɪˈɒnɪk), adjective

Word Origin for anion

C19: from ana- + ion
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

Medical definitions for anion

anion
[ ăn′ī′ən ]
n.
A negatively charged ion, especially one that migrates to the anode in electrolysis.

Other words from anion

an′i•on′ic (-ŏn′ĭk) adj.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

Scientific definitions for anion

anion
[ ăn′ī′ən ]
An ion with net negative charge, having more electrons than protons. In electrolysis, anions migrate to a positively charged anode. Compare cation.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
FEEDBACK