light year definition

  • noun:
    • A unit of size (acronym ly; corresponding to just below 10 trillion kilometres (1016 metres)) corresponding to the length light travels in a single Julian 12 months; familiar with measure exceptionally large distances.
    • A very long way.
    • A very long time.

Related Sources

  • Sentence for "light year"
  • Cross Reference for "light year"
  • Astronomy Dictionary for "light year"
    • the length light travels in a-year,…
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  • Urban Dictionary for "light year"
    • 1 Light Year = 9324744613632kmOne light-year…
    • View More
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