Definition of light-years ahead
: much more advanced than others ideas that are light-years ahead of the their time This new technology puts the company light-years ahead of its competitors.
Word by Word Definitions
: a unit of length in astronomy equal to the distance that light travels in one year in a vacuum or about 5.88 trillion miles (9.46 trillion kilometers)
: an extremely large measure of comparison (as of distance, time, or quality)
: in a forward direction or position : forward
: in front
: in, into, or for the future
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