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thorium
 
Noun thorium has 1 sense
  1. thorium, Th, 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
    --1 is a kind of metallic element, metal
    --1 is a substance of monazite; thorite
    --1 has particulars: thorium-228, radiothorium
    Derived form: verb thoriate1
thorax thorazine thoreau thoreauvian thoriate thoriated thorite thorium-228 thorium thorkildsen thorn thorn apple thorn bush thornbill thornburg thornburg mortgage inc thorndike

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