epicyclical

• 与均轮相关的；用于托勒密天文学中，指本轮，即其中心沿较大圆周运动的小圆。

Relating to an epicycle; used in obsolete Ptolemaic astronomy to describe a small circle whose center moves around the circumference of a larger circle.

1. Relating to an epicycleC2formal

   Pertaining to a small circle whose center moves along the circumference of a larger circle, used in ancient astronomy to explain planetary motion.

   本轮说的

   • The Ptolemaic model relied on epicyclical paths to describe planetary orbits.
   • Epicyclical motion was a key concept in pre-Copernican astronomy.
   • The mathematician explained the epicyclical theory of the solar system.

   同义词epicyclic