Dictionary

radiothorium

noun ra·dio·tho·ri·um \-ˈthr-ē-əm\

Definition of RADIOTHORIUM

:  a radioactive isotope of thorium with the mass number 228

Origin of RADIOTHORIUM

New Latin
First Known Use: 1905

radiothorium

noun ra·dio·tho·ri·um \-ˈthōr-ē-əm, -ˈthr-\   (Medical Dictionary)

Medical Definition of RADIOTHORIUM

:  a radioactive isotope of thorium with the mass number 228

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