radioactinium

noun

ra·​dio·​actinium
"+
: the radioactive isotope of thorium of mass number 227 formed by disintegration of actinium
—symbol RdAc or Th227 see actinium series

Word History

Etymology

New Latin, from radio- + actinium

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Dictionary Entries Near radioactinium

radioacoustics

radioactinium

radioactivate

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Cite this Entry

“Radioactinium.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/radioactinium. Accessed 23 Nov. 2024.

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