epicicle

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• épicycle — [ episikl ] n. m. • 1580; epicicle 1377; du gr. epi « sur » et kuklos « cercle » ♦ Hist. astron. Petit cercle décrit par un astre, tandis que le centre de ce cercle décrit lui même un autre cercle. ● épicycle nom masculin (bas latin epicyclus, du …   Encyclopédie Universelle

• epicycle — noun Etymology: Middle English epicicle, from Late Latin epicyclus, from Greek epikyklos, from epi + kyklos circle more at wheel Date: 14th century 1. in Ptolemaic astronomy a circle in which a planet moves and which has a center that is itself… …   New Collegiate Dictionary

• epicycle — [ep′ə sī΄kəl] n. [ME epicicle < LL epicyclus < Gr epikyklos < epi , upon + kyklos, a circle: see CYCLE] 1. a circle whose center moves along the circumference of another, larger circle: term used to describe planetary motions in the… …   English World dictionary