BabelNet

bn:00051133n

Noun Concept

light hour light-hour

The distance light travels in a vacuum in one hour; approximately one billion kilometers WordNet 3.0

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The distance light travels in a vacuum in one hour; approximately one billion kilometers WordNet 3.0 & Open English WordNet

A unit of distance equal to the distance traveled by light in vacuum in an hour. Wiktionary

Unit of distance. Wiktionary (translation)

IS A

PART OF

WordNet 3.0 & Open English WordNet

light hour

Wiktionary

light-hour