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2 definitions found
 for speed of light
From WordNet (r) 3.0 (2006) :

  speed of light
      n 1: 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
           [syn: speed of light, light speed, c]

From The Jargon File (version 4.4.7, 29 Dec 2003) :

  speed of light
  
  
      The absolutely fastest a particular algorithm or application could be
      implemented, given a set of constraints that are assumed to be
      unchangeable. For example, ?This would take 60 microseconds without any
      processing whatsoever, so that's the speed of light.? However, as one
      brilliant hacker once commented: ?Remember that the speed of light only is
      constant if you can't redesign the universe.?
  

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