Usually means: Radioactive thorium isotope, nuclear research.
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We found 15 dictionaries that define the word radiothorium:

General (13 matching dictionaries)
  1. radiothorium: Merriam-Webster
  2. radiothorium: American Heritage Dictionary of the English Language
  3. radiothorium: Collins English Dictionary
  4. radiothorium: Vocabulary.com
  5. radiothorium: Wordnik
  6. radiothorium: Wiktionary
  7. radiothorium: Webster's New World College Dictionary, 4th Ed.
  8. radiothorium: Infoplease Dictionary
  9. radiothorium: Dictionary.com
  10. radiothorium: Rhymezone
  11. radiothorium: FreeDictionary.org
  12. radiothorium: Mnemonic Dictionary
  13. radiothorium: TheFreeDictionary.com

Computing (1 matching dictionary)
  1. radiothorium: Encyclopedia

Medicine (1 matching dictionary)
  1. radiothorium: Merriam-Webster Medical Dictionary

(Note: See radiothoriums as well.)

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Definitions from Wiktionary (radiothorium)

▸ noun:  (physics) The radioactive isotope thorium-228

Similar:
thorium-228, radioisotope, radioelement, radionuclide, radiothermoluminescence, radiohelium, uranium-235, radiation, radiophysics, uranium-238, more...

Opposite:
stable, or inert.

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Similar:
thorium-228, radioisotope, radioelement, radionuclide, radiothermoluminescence, radiohelium, uranium-235, radiation, radiophysics, uranium-238, more...

Opposite:
stable, or inert.



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