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Definition of Epicycle
1. Noun. A circle that rolls around (inside or outside) another circle; generates an epicycloid or hypocycloid.
Definition of Epicycle
1. n. A circle, whose center moves round in the circumference of a greater circle; or a small circle, whose center, being fixed in the deferent of a planet, is carried along with the deferent, and yet, by its own peculiar motion, carries the body of the planet fastened to it round its proper center.
Definition of Epicycle
1. Noun. (astronomy) A small circle whose centre is on the circumference of a larger circle; in Ptolemaic astronomy it was seen as the basis of revolution of the "seven planets", given a fixed central Earth. ¹
2. Noun. (mathematics) Any circle whose circumference rolls around that of another circle, thus creating a hypocycloid or epicycloid. ¹
¹ Source: wiktionary.com
Definition of Epicycle
1. a circle that rolls on the circumference of another circle [n -S]
Medical Definition of Epicycle
1.
1. A circle, whose center moves round in the circumference of a greater circle; or a small circle, whose center, being fixed in the deferent of a planet, is carried along with the deferent, and yet, by its own peculiar motion, carries the body of the planet fastened to it round its proper center. "The schoolmen were like astronomers which did feign eccentries, and epicycles, and such engines of orbs." (Bacon)
2.