light–year
1 ENTRIES FOUND:
plural
light–years
plural
light–years
Britannica Dictionary definition of LIGHT–YEAR
1
[count]
technical
:
a unit of distance equal to the distance that light travels in one year (about 5.88 trillion miles or 9.46 trillion kilometers)
-
a star about 10 light-years away
2
light-years
[plural]
a
— used to say that someone or something is much better or more advanced than others
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This new technology puts the company light-years ahead [=very far ahead] of its competitors.
b
— used to refer to a time that is or seems very far away
-
A cure for that disease is still probably light-years away.
