Ptolemaic Theory

   It states that the Earth is a fixed body at the center of our solar system, and the Sun and planets orbit around it. Also called Geocentric Theory. See Heliocentric Theory.

The writer's dictionary of science fiction, fantasy, horror and mythology. 2014.

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  • ptolemaic theory — n. geocentric theory of the universe, theory that the earth is viewed as the center of the universe and is orbited by the sun and planets …   English contemporary dictionary

  • Ptolemaic system — (also Ptolemaic theory) ► NOUN ▪ the formerly held theory that the earth is the stationary centre of the universe …   English terms dictionary

  • Theory — The word theory has many distinct meanings in different fields of knowledge, depending on their methodologies and the context of discussion.In science a theory is a testable model of the manner of interaction of a set of natural phenomena,… …   Wikipedia

  • Ptolemaic system — (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 …   English new terms dictionary

  • Ptolemaic — Ptol e*ma ic, a. Of or pertaining to Ptolemy, the geographer and astronomer. [1913 Webster] {Ptolemaic system} (Astron.), the system maintained by Ptolemy, who supposed the earth to be fixed in the center of the universe, with the sun and stars… …   The Collaborative International Dictionary of English

  • Ptolemaic system — Ptolemaic Ptol e*ma ic, a. Of or pertaining to Ptolemy, the geographer and astronomer. [1913 Webster] {Ptolemaic system} (Astron.), the system maintained by Ptolemy, who supposed the earth to be fixed in the center of the universe, with the sun… …   The Collaborative International Dictionary of English

  • Ptolemaic system — n. the theory, systematized by Ptolemy, postulating the earth as the center or fixed point of the universe, around which the celestial bodies move …   English World dictionary

  • Ptolemaic system — The dominant, geocentric system of astronomy before Copernicus . Ptolemy was an astronomer, mathematician, and geographer who flourished between AD 127 and 148 in Alexandria. His masterpiece is known by its Arabic title of the Almagest, a… …   Philosophy dictionary

  • Ptolemaic — adj. hist. 1 of or relating to Ptolemy, a 2nd c. Alexandrian astronomer, or his theories. 2 of or relating to the Ptolemies, Macedonian rulers of Egypt from the death of Alexander the Great (323 BC) to the death of Cleopatra (30 BC). Phrases and… …   Useful english dictionary

  • Heliocentric Theory —    A theory which states that the Sun is a fixed body at the center of our solar system, and all the other planets revolve around it. This theory was first presented by the Greek, Aristarchus of Samos in the third century BC. Also called the Sun… …   The writer's dictionary of science fiction, fantasy, horror and mythology

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