Ptolemy (n.)Alexandrian astronomer (of the 2nd century) who proposed a geocentric system of astronomy that was undisputed until the late Renaissance;
Synonyms: Claudius Ptolemaeus
Ptolemy (n.)an ancient dynasty of Macedonian kings who ruled Egypt from 323 BC to 30 BC; founded by Ptolemy I and ended with Cleopatra;
Synonyms: Ptolemaic dynasty
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