deferent

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Related to Deferents: epicycle

deferent

(def -ĕ-rĕnt) See Ptolemaic system.

Deferent

 

an auxiliary circle in the Ptolemaic geocentric system of the world, introduced to explain the complex motions of planets. It was assumed that the center of the epicycle—another auxiliary circle—moves around the circumference of the deferent, at whose center lies the earth; the planet itself moves along the circumference of an epicycle.

deferent

[′def·ə·rənt]
(astronomy)
An imaginary circle around the earth, postulated by Ptolemy, in whose circumference a celestial body or its epicycle is supposed to move.
References in periodicals archive ?
Les malformations des organes genitaux internes masculins issus du canal mesonephrotique, ou canal de Wolff (epididyme, canaux deferents, vesicules seminales, canal ejaculateur), sont des pathologies mal connues en raison de leur rarete.
L'absence congenitale bilaterale des canaux deferents et l'absence congenitale unilaterale des canaux deferents sont deux causes d'infertilite masculine.
Les absences des canaux deferents dans l'infertilite masculine.