light year
Pronunciation Noun
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Pronunciation Noun
light year (plural light years)
- (astronomy) A unit of length (abbreviation ly; equal to just under 10 trillion kilometres (1016 metres)) equal to the distance light travels in one Julian year; used to measure extremely large distances.
- (only in plural, figurative, informal) A very long way.
- The marathon runner in the lead is light years ahead of the one at the back.
- (only in plural, figurative, informal) A very long time.
- Some of Leonardo da Vinci’s inventions were light years ahead of their time.
- French: année-lumière
- German: Lichtjahr
- Italian: anno luce
- Portuguese: ano-luz
- Russian: светово́й год
- Spanish: año luz
- Italian: anni luce
This text is extracted from the Wiktionary and it is available under the CC BY-SA 3.0 license | Terms and conditions | Privacy policy 0.003