See also: -onium

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EnglishEdit

Etymology 1Edit

 
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From ammonium.

NounEdit

onium ‎(plural oniums)

  1. (chemistry) any cation derived by the addition of a proton to the hydride of any element of the nitrogen, chalcogen or halogen families
  2. (chemistry) any organic derivative of these compounds
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TranslationsEdit

Etymology 2Edit

 
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See Muonium#Nomenclature.

NounEdit

onium ‎(plural onia)

  1. (physics) the bound pair of a particle and its antiparticle
Derived termsEdit
Related termsEdit
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