Definition of anion in English:

anion

Syllabification: an·i·on
Pronunciation: /ˈanˌīən
 
/

noun

Chemistry
  • A negatively charged ion, i.e., one that would be attracted to the anode in electrolysis. The opposite of cation.
    More example sentences
    • When two atoms swap electrons to produce a cation and an anion, the two ions are attracted to each other.
    • During electrolysis an anion is attracted to the anode (positive electrode).
    • In an ionic compound there are two different types of ions present, the positively charged cations and the negatively charged anions.

Derivatives

anionic

Pronunciation: /ˌanīˈänik/
adjective
More example sentences
  • An example of an anionic emulsifier is stearic acid.
  • The development of both cationic and anionic exchange materials did not occur until 1935.
  • The anionic lipids promote faster adsorption whether present in the bilayer vesicles or in the surface monolayer.

Origin

mid 19th century: from anode or ana- + ion.

More definitions of anion

Definition of anion in:

Get more from Oxford Dictionaries

Subscribe to remove ads and access premium resources

Word of the day maelstrom
Pronunciation: ˈmālˌsträm
noun
a powerful whirlpool in the sea