English dictionary
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English noun: atomic number 91 | |||
| 1. | atomic number 91 (substance) a short-lived radioactive metallic element formed from uranium and disintegrating into actinium and then into lead | ||
| Synonyms | Pa, protactinium, protoactinium | ||
| Broader (hypernym) | metal, metallic element | ||
Based on WordNet 3.0 copyright © Princeton University.
Web design: Orcapia v/Per Bang. English edition: .
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Web design: Orcapia v/Per Bang. English edition: .
2025 onlineordbog.dk