meridian

  1. Noun.  An imaginary great circle on the Earth's surface, passing through the geographic poles.
  2. Noun.  Either half of such a great circle, all points of which have the same longitude.
  3. Noun.  (astronomy) A great circle passing through the poles of the celestial sphere and the zenith for a particular observer.
  4. Noun.  (mathematics) A similar line on any general surface of revolution.
  5. Noun.  (context, alternative medicine) Any of the longitudinal pathways on the body along which acupoints are thought to be distributed.
  6. Noun.  The highest point or state of consciousness and enlightenment achievable by a human.
  7. Adjective.  Meridional; relating to a meridian.
  8. Adjective.  Relating to noon.

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This entry was last updated on RefTopia from its source on 3/20/2012.