radiothorium
noun
ra·dio·tho·ri·um
ˌrā-dē-ō-ˈthȯr-ē-əm 
: a radioactive isotope of thorium with the mass number 228
Word History
Etymology
New Latin
First Known Use
1905, in the meaning defined above
Dictionary Entries Near radiothorium
Cite this Entry
“Radiothorium.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/radiothorium. Accessed 16 Apr. 2024.
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Medical Definition
radiothorium
noun
ra·dio·tho·ri·um
-ˈthōr-ē-əm, -ˈthȯr-
: a radioactive isotope of thorium with the mass number 228
More from Merriam-Webster on radiothorium
Britannica.com: Encyclopedia article about radiothorium
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