English
Detailed Synonyms for light speed in English
light speed:
light speed [the ~] noun
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the light speed
– the speed at which light travels in a vacuum; the constancy and universality of the speed of light is recognized by defining it to be exactly 299,792,458 meters per second 1the c; the light speed; the speed of light– the speed at which light travels in a vacuum; the constancy and universality of the speed of light is recognized by defining it to be exactly 299,792,458 meters per second 1