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ion

nounphraseattested in dialogue

  • United Kingdom//ˈaɪən//
  • United Kingdom//ˈaɪ.ɒn//
  • United States//ˈaɪ.ɑn//
  • //ˈaɪˌoʊn//

An atom or group of atoms bearing an electrical charge, such as the sodium and chlorine atoms in a salt solution.

noun

  1. 1

    An atom or group of atoms bearing an electrical charge, such as the sodium and chlorine atoms in a salt solution.

Etymology

From the ending of anion and cation, which in turn is from Ancient Greek ἰόν (ión, “going”), neuter present participle of εἶμι (eîmi, “I go”). Coined by English polymath William Whewell in 1834 for Michael Faraday, who introduced it later that year.

phrase

  1. 1

    slangI don't.

    ion know what 2 do

    ion want 2

Etymology

From a reduction of I don't.

Forms

plural
ions
The neighbouring pagesAlphabetical order follows the rules of the language, not byte values: an accent decides only between two otherwise identical words, and Spanish files Ñ as a letter of its own.

Lexical content from Wiktionary, under CC BY-SA 4.0 · Source entry · Data version 2026-08-23

Rank among the words of the OpenSubtitles 2018 corpus — film and television subtitles, so spoken rather than written usage (CC BY-SA 3.0).