Definition of “anion” - English Dictionary

british dictionary

“anion” in British English

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anionnoun [ C ]

uk /ˈæn.aɪ.ən/ us /ˈæn.aɪ.ən/ specialized


  • In such a circle as that delineated, therefore, all the known anions may be grouped within, and all the cations without.
  • The difference might possibly depend upon the arrangement of ions, anions and cations upon two sides of the permeable membrane of a repair cell.

(Definition of “anion” from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)