Source : Webster's Revised Unabridged Dictionary (1913)

Ptolemaic \Ptol`e*ma"ic\, a.
   Of or pertaining to Ptolemy, the geographer and astronomer.

   {Ptolemaic system} (Astron.), the system maintained by
      Ptolemy, who supposed the earth to be fixed in the center
      of the universe, with the sun and stars revolving around
      it. This theory was received for ages, until superseded by
      the Copernican system.

Source : WordNet®

Ptolemaic system
     n : Ptolemy's model of the universe with the Earth at the center