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Defenition of the word atomic number 90

    • Defenition of the word atomic number 90

      • 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

    Synonyms for the word atomic number 90

      • Th
      • thorium

    Hyponyms for the word atomic number 90

      • radiothorium
      • thorium-228

    Hypernyms for the word atomic number 90

      • metal
      • metallic element

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