radiothorium

noun

ra·dio·tho·ri·um ˌrā-dē-ō-ˈthȯr-ē-əm

: a radioactive isotope of thorium with the mass number 228

Etymology

New Latin

First Known Use

1905, in the meaning defined above

Time Traveler

The first known use of radiothorium was in 1905

See more words from the same year

Style

“Radiothorium.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/radiothorium. Accessed 21 Dec. 2024.

Copy Citation

radiothorium

noun

ra·dio·tho·ri·um -ˈthōr-ē-əm, -ˈthȯr-

: a radioactive isotope of thorium with the mass number 228

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