ac·​ti·​no·​ura·​ni·​um | \ ¦ak-tə-(ˌ)nō-yu̇-ˈrā-nē-əm \

Definition of actinouranium

: the uranium isotope of mass 235

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First Known Use of actinouranium

1918, in the meaning defined above

History and Etymology for actinouranium

International Scientific Vocabulary actino- (from New Latin actinium) + uranium

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The first known use of actinouranium was in 1918

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Cite this Entry

“Actinouranium.” Dictionary, Merriam-Webster, Accessed 18 Feb. 2020.

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