ionium
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About Our Definitions: All forms of a word (noun, verb, etc.) are now displayed on one page.io·ni·um
noun \ī-ˈō-nē-əm\Definition of IONIUM
: a natural radioactive isotope of thorium having a mass number of 230
Origin of IONIUM
ion; from its ionizing action
First Known Use: 1907
io·ni·um
noun \ī-ˈō-nē-əm\ (Medical Dictionary)Medical Definition of IONIUM
: a natural radioactive isotope of thorium having a mass number of 230
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