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Light Year
Babylon English English dictionaryDownload this dictionary
light year
n. distance that light travels in 1 year (approximately 9.46 trillion kilometers or 5.88 trillion miles); very far away

Wikipedia English The Free EncyclopediaDownload this dictionary
Light-year
A light-year, also light year or lightyear (symbol: ly) is a unit of length, equal to just under 10 trillion kilometres (or about 6 trillion miles). As defined by the International Astronomical Union (IAU), a light-year is the distance that light travels in a vacuum in one Julian year.

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WordNet 2.0 DictionaryDownload this dictionary
light year
Noun
1. the distance that light travels in a vacuum in 1 year; 5.88 trillion miles or 9.46 trillion kilometers
(hypernym) astronomy unit
(part-meronym) light hour


Babylon English-CzechDownload this dictionary
light year
n. světelný rok

Babylon English-PolishDownload this dictionary
light year
rok świetlny

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