English dictionary
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English noun: atomic number 86 | |||
| 1. | atomic number 86 (substance) a radioactive gaseous element formed by the disintegration of radium; the heaviest of the inert gasses; occurs naturally (especially in areas over granite) and is considered a hazard to health | ||
| Synonyms | radon, Rn | ||
| Broader (hypernym) | argonon, chemical element, element, inert gas, noble gas | ||
Based on WordNet 3.0 copyright © Princeton University.
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Web design: Orcapia v/Per Bang. English edition: .
2025 onlineordbog.dk