Noun

1. The speed of light.

   • 1994 - Ursula K. Le Guin, A Fisherman of the Inland Sea. Victor Gollancz (UK), 1996. ISBN 0575602392. Page 7.

     If we're going to a world a hundred light-years from here at near lightspeed, we spend according to our own perceptions, only a few minutes doing so and arrive only a few minutes older.