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light speed

DEFINITIONS OF: light speed

1

n 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

Synonyms:
c, speed of light
Type of:
constant
a number representing a quantity assumed to have a fixed value in a specified mathematical context
speed, velocity
distance travelled per unit time
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