English dictionary
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English noun: actinium | |||
| 1. | actinium (substance) a radioactive element of the actinide series; found in uranium ores | ||
| Synonyms | Ac, atomic number 89 | ||
| Broader (hypernym) | chemical element, element | ||
| Substance meronym | uranium ore | ||
Based on WordNet 3.0 copyright © Princeton University.
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Web design: Orcapia v/Per Bang. English edition: .
2026 onlineordbog.dk