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ionium

noun
io·​ni·​um | \ ī-ˈō-nē-əm How to pronounce ionium (audio) \

Definition of ionium

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

Examples of ionium in a Sentence

Recent Examples on the Web

 Rona set to work isolating a potential new element called ionium. — New York Times, "Overlooked No More: Elizabeth Rona, Pioneering Scientist Amid Dangers of War," 28 Aug. 2019

First Known Use of ionium

1907, in the meaning defined above

History and Etymology for ionium

ion + -ium; so called from its ionizing action

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More Definitions for ionium

ionium

noun
io·​ni·​um | \ ī-ˈō-nē-əm How to pronounce ionium (audio) \

Medical Definition of ionium

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

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