English dictionary
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English noun: atomic number 57 | |||
| 1. | atomic number 57 (substance) a white soft metallic element that tarnishes readily; occurs in rare earth minerals and is usually classified as a rare earth | ||
| Synonyms | La, lanthanum | ||
| Broader (hypernym) | metal, metallic element | ||
Based on WordNet 3.0 copyright © Princeton University.
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Web design: Orcapia v/Per Bang. English edition: .
2025 onlineordbog.dk