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ionium

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noun io·ni·um \ī-ˈō-nē-əm\

Definition of ionium

  1. :  a natural radioactive isotope of thorium having a mass number of 230



Origin and Etymology of ionium

ion; from its ionizing action


First Known Use: 1907


Medical Dictionary

ionium

play
noun io·ni·um \ī-ˈō-nē-əm\

Medical Definition of ionium

  1. :  a natural radioactive isotope of thorium having a mass number of 230




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