ion

From Wiktionary

[change] Pronunciation

• (UK)
  • IPA: /ˈaɪən/
  • SAMPA: /"aI@n/

[change] Homophones

• iron (in some accents only)

[change] Noun

Singular ion

Plural ions

1. An ion is a charged atom.

   Ions are of two types - cations and anions.