ptolemaic

Thân thiện

A teacher points to a diagram of the ptolemaic system on a classroom board.

Definition

1. Adjective:
   • Relating to the geocentric astronomical system of Claudius Ptolemy: Describing the model of the universe that places Earth at the center, with the sun, moon, and planets revolving around it.
   • Relating to the astronomer Ptolemy (Claudius Ptolemaeus): Pertaining to the ancient Greco-Roman mathematician, astronomer, and geographer.

Usage Examples

• Adjective:
  • The ptolemaic model of the cosmos was dominant for over a millennium.
  • He studied ptolemaic astronomy to understand historical scientific thought.

Advanced Usage

• "Ptolemaic system": The specific term for the Earth-centered cosmological model.
  • The Copernican revolution eventually replaced the Ptolemaic system.
• "Ptolemaic dynasty": Refers to the Hellenistic dynasty that ruled Egypt from 305 to 30 BC, founded by Ptolemy I Soter. (Note: This is a distinct, related usage based on the name Ptolemy).
  • Cleopatra VII was the last ruler of the Ptolemaic dynasty.

Variants and Related Words

• Ptolemaist (noun, historical): A supporter or adherent of the Ptolemaic system.
• Ptolemy (noun): The name of the astronomer and the rulers of the Hellenistic dynasty.

Synonyms

• Geocentric: Having or representing the earth as the center.
  • The ptolemaic and geocentric views were once synonymous.

Related Phrases

• "Ptolemaic epicycle": A specific component of the Ptolemaic model, a small circle whose center moves around a larger circle (the deferent), used to explain planetary motion.
  • The complex paths of planets were explained using Ptolemaic epicycles.

Học thuật

Adjective

1. of or relating to the geocentric Ptolemaic system
   • in the Ptolemaic system of planetary motion the earth is fixed as the center of the universe with the sun and moon and planets revolving around it
2. of or relating to the astronomer Ptolemy

Từ đồng nghĩa

• ptolemaic