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

synoniem: light year.

Roget 200: length, longitude, span; mileage; distance etc. 196.    line, bar, rule, stripe, streak, spoke, radius.    lengthening etc. v.; prolongation, production, protraction; tension, tensure^†; extension.    [Measures of length] line, nail, inch, hand, palm, foot, cubit, yard, ell, fathom, rood, pole, furlong, mile, league; chain, link; arpent^†, handbreadth^†, jornada [U.S.], kos^†, vara^†.    [astronomical units of distance] astronomical unit, AU, light-year, parsec.    [metric units of length] nanometer, nm, micron, micrometer, millimicron, millimeter, mm, centimeter, cm, meter, kilometer, km.    pedometer, perambulator; scale etc. (measurement) 466.    ... meer laten zien

Nederlands: lichtjaar
Pools: rok świetlny