English dictionary
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English noun: atomic number 18 | |||
| 1. | atomic number 18 (substance) a colorless and odorless inert gas; one of the six inert gases; comprises approximately 1% of the earth's atmosphere | ||
| Synonyms | Ar, argon | ||
| Broader (hypernym) | argonon, chemical element, element, inert gas, noble gas | ||
| Substance meronym | air | ||
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Web design: Orcapia v/Per Bang. English edition: .
2024 onlineordbog.dk