Definition of Ptolemaic system in English:

Share this entry

Ptolemaic system

Pronunciation: /tɒləˈmeɪɪksɪstəm/
(also Ptolemaic theory)

noun

Astronomy , historical
The theory that the earth is the stationary centre 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.

For editors and proofreaders

Line breaks: Ptol¦em|aic sys¦tem

Share this entry
 

What do you find interesting about this word or phrase?

Comments that don't adhere to our Community Guidelines may be moderated or removed.