ionium

noun io·ni·um \ ī-ˈō-nē-əm \

Definition of ionium

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

Origin and Etymology of ionium

ion; from its ionizing action


Medical Dictionary

ionium

noun io·ni·um \ ī-ˈō-nē-əm \

medical Definition of ionium

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

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