(also Ptolemaic theory)
nounAstronomy , 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.
More 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:
- The British & World English dictionary