Library / English Dictionary

    RADIOTHORIUM

    Pronunciation (US): Play  (GB): Play

     I. (noun) 

    Sense 1

    Meaning:

    Radioactive isotope of thorium with mass number 228play

    Synonyms:

    radiothorium; thorium-228

    Classified under:

    Nouns denoting substances

    Hypernyms ("radiothorium" is a kind of...):

    atomic number 90; Th; thorium (a soft silvery-white tetravalent radioactive metallic element; isotope 232 is used as a power source in nuclear reactors; occurs in thorite and in monazite sands)

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