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. Source: opted

2. n. A circle which rolls on the circumference of another circle, either externally or internally. Source: opted

3. n. a circle that rolls around (inside or outside) another circle; generates an epicycloid or hypocycloid Source: wordnet

4. 1. (Ptolemaic Astron.) 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. (Mech.) A circle which rolls on the circumference of another circle, either externally or internally. Source: webster

5. A circle, whose center moves round in the circumference of agreater circle; or a small circle, whose center, being fixed in thedeferent of a planet, is carried along with the deferent, and yet, byits own peculiar motion, carries the body of the planet fastened toit round its proper center.The schoolmen were like astronomers which did feign eccentries, andepicycles, and such engines of orbs. Bacon. Source: adambom

6. n:100 n. a circle that rolls around (inside or outside) another circle; generates an epicycloid or hypocycloid Source: ecdict

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