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Ptolemaic system

Syllabification: Ptol·e·ma·ic sys·tem
(also Ptolemaic theory)

Definition of Ptolemaic system in English:

noun

Astronomy , historical
The theory that the earth is the stationary center of the universe, with the planets moving in epicyclic orbits within surrounding concentric spheres. Compare with Copernican system.
Example sentences
  • For many centuries, astronomers embraced the Ptolemaic theory: the Sun revolves around Earth.
  • The Ptolemaic theory of all the planets encircling the earth could now be disproved once and for all.
  • Suppose I decide that I believe the Ptolemaic system is more plausible than the Copernican system.

Definition of Ptolemaic system in:

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