| / English Dictionary |
THORIUM
| Pronunciation (US): |  | (GB): | |
I. (noun)
Sense 1
Meaning:
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:
atomic number 90; Th; thorium
Classified under:
Hypernyms ("thorium" is a kind of...):
metal; metallic element (any of several chemical elements that are usually shiny solids that conduct heat or electricity and can be formed into sheets etc.)
Hyponyms (each of the following is a kind of "thorium"):
radiothorium; thorium-228 (radioactive isotope of thorium with mass number 228)
Holonyms ("thorium" is a substance of...):
monazite (a reddish-brown mineral containing rare earth metals; an important source of thorium and cerium)
thorite (a radioactive mineral consisting of thorium silicate; it is a source of thorium that is found in coarse granite)
Derivation:
thoriate (impregnate with thorium oxide to increase thermionic emission)
YOU MAY ALSO LIKE
