light year
noun/ˈlaɪt jɪə(r)/, /ˈlaɪt jɜː(r)/
/ˈlaɪt jɪr/
- (astronomy) the distance that light travels in one year, 9.4607 × 1012 kilometres
- The nearest star to earth is about 4 light years away.
- light years[plural] a very long time
- Full employment still seems light years away.
- The new range puts us light years ahead of the competition.
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light year