Merriam-Webster Collegiate Dictionary - ptolemaic

 adjective  Etymology: Greek Ptolemaikos, from Ptolemaios Ptolemy  Date: 1674  1. of or relating to the second century geographer and astronomer Ptolemy of Alexandria and especially to his belief that the earth is at the center of the universe with the sun, moon, and planets revolving around it the ~ system  2. of or relating to the Greco-Egyptian Ptolemies ruling Egypt from 323 to 30 B.C.