light_speed
1. [ noun ] (physics,mathematics) 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: speed_of_light c
Related terms: speed constant
Similar spelling:   light_source
  light_second
  light_show
  light-green
  light_cream
  Lightcap
  lightsome
  lightship
  light_company