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English noun: Fr | |||
| 1. | Fr (substance) a radioactive element of the alkali-metal group discovered as a disintegration product of actinium | ||
| Synonyms | atomic number 87, francium | ||
| 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: .
2026 onlineordbog.dk