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'speed of light' in a sentence

Learn how to use 'speed of light' with 2 example sentences.


speed of light noun

: 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


  • Everything happened at the speed of light.
  • The speed of light is much greater than that of sound.
  • Words near 'speed of light' in the dictionary