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anion

[ an-ahy-uhn ]
/ ˈænˌaɪ ən /
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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).
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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. 2021

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.
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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.
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