| NOUN | substance | thorium, Th, atomic number 90 | a soft silvery-white tetravalent radioactive metallic element |
|---|
| Sounds | thaa'riyahm | |
|---|---|---|
| Rhymes | abolitionism ... zirconium: 557 rhymes with ahm... | |
| 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. | |
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| Synonyms | Th, atomic number 90 | |
| Narrower | thorium-228, radiothorium | radioactive isotope of thorium with mass number 228 |
| Broader | metallic element, metal | Any of several chemical elements that are usually shiny solids that conduct heat or electricity and can be formed into sheets etc. |
| Substance of | monazite | A reddish-brown mineral containing rare earth metals |
| thorite | A radioactive mineral consisting of thorium silicate | |
| Spanish | número atómico 90, Th, tori, torio | |
| Catalan | número atòmic 90, Th, tori | |
| Verbs | thoriate | impregnate with thorium oxide to increase thermionic emission |
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