English dictionary
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English noun: light hour | |||
| 1. | light hour (quantity) the distance light travels in a vacuum in one hour; approximately one billion kilometers | ||
| Broader (hypernym) | astronomy unit | ||
| Part meronym | light year, light-year | ||
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: .
2024 onlineordbog.dk