Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun speed_of_light

1 sense of speed of light

Sense 1
speed of light, light speed, c -- (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)
       => speed, velocity -- (distance travelled per unit time)
       => constant -- (a number representing a quantity assumed to have a fixed value in a specified mathematical context; "the velocity of light is a constant")