English dictionary
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English noun: atomic number 90 | |||
| 1. | atomic number 90 (substance) 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 | Th, thorium | ||
| Broader (hypernym) | metal, metallic element | ||
| Narrower (hyponym) | radiothorium, thorium-228 | ||
| Substance meronym | monazite, thorite | ||
Based on WordNet 3.0 copyright © Princeton University.
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Web design: Orcapia v/Per Bang. English edition: .
2025 onlineordbog.dk