thorium 1
noundomain: substance
Princeton WordNet [ver.3.1]
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EnglishDefinition
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
Hypernym
any of several chemical elements that are usually shiny solids that conduct heat or electricity and can be formed into sheets etc.
Substance_meronym
monazite 1
noun
a reddish-brown mineral containing rare earth metals; an important source of thorium and cerium
thorite 1
noun
a radioactive mineral consisting of thorium silicate; it is a source of thorium that is found in coarse granite
EnglishDerivationally related form
thoriate 1
verb
impregnate with thorium oxide to increase thermionic emission
Hyponym
thorium-228 1
noun
radioactive isotope of thorium with mass number 228
Substance_holonym
monazite 1
noun
a reddish-brown mineral containing rare earth metals; an important source of thorium and cerium
thorite 1
noun
a radioactive mineral consisting of thorium silicate; it is a source of thorium that is found in coarse granite
