anionic

adjective

an·​ion·​ic ˌa-(ˌ)nī-ˈä-nik How to pronounce anionic (audio)
1
: of or relating to anions
2
: characterized by an active and especially surface-active anion

Examples of anionic in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
The cationic molecules in this detergent work to pull out the anionic sweat and bacteria particles in our clothes like a magnet. — Sarah Madaus, SELF, 11 Sep. 2020 The array was formed by 21 ISEs combining both cationic and anionic sensors with others with generic response. — Seriously Science, Discover Magazine, 5 Feb. 2014 In these surfactants, the hydrophilic end may simultaneously carry both anionic and cationic hydrophilic groups depending on ambient conditions such as pH (a scale of acid to base). — Anna Giorgi, Verywell Health, 4 Mar. 2025

Word History

First Known Use

1903, in the meaning defined at sense 1

Time Traveler
The first known use of anionic was in 1903

Rhymes for anionic

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Browse Nearby Words

anion-exchange resin
anionic
anionic detergent
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Cite this Entry

“Anionic.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/anionic. Accessed 7 Jul. 2026.

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Medical Definition

anionic

adjective
an·​ion·​ic ˌan-(ˌ)ī-ˈän-ik How to pronounce anionic (audio)
1
: of or relating to anions
2
: characterized by an active and especially surface-active anion
anionically
-i-k(ə-)lē How to pronounce anionic (audio)
adverb
Last Updated: - Updated example sentences
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