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Noun: light-year  'lIt,yeer
  1. The distance that light travels in a vacuum in 1 year; 5.88 trillion miles or 9.46 trillion kilometres
    - light year

Derived forms: light years, light-years

Type of: astronomy unit

Encyclopedia: Light-year

Nearest

light-sensitive
lightship
light-skinned
lightsome
lightsomely
lightsomeness
lights-out
light-tight
lightweight
lightwood
light-year
ligne
ligneous
ligneous plant
lignify
lignin
lignite
lignitic
lignocaine
lignosae
lignum