light-day 1
noundomain: quantity
EnWordnet [ver.5.0]
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EnglishDefinition
the distance light travels in a vacuum in one day; approximately 26 billion kilometers.
Examples
- 1.Sedna is currently 0.52 light-days from the Sun; on an orbit that varies from a perihelion of 0.44 light-days to an aphelion of 5.41 light-days.
