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Light-year   /laɪt-jɪr/   Listen
Light-year

noun
1.
The distance that light travels in a vacuum in 1 year; 5.88 trillion miles or 9.46 trillion kilometers.  Synonym: light year.






WordNet 3.0 © 2010 Princeton University








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Words linked to "Light-year" :   astronomy unit, light hour, light minute, light second



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