deferent

(redirected from Deferents)
Also found in: Dictionary, Thesaurus, Medical.
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 ?
L'absence de canaux deferents (ACD) et de vesicules seminales est une cause tres rare d'infertilite masculine.
Les examens cliniques, echographiques et genetiques permettent d'envisager differentes possibilites : absence unilaterale ou bilaterale des canaux deferents, isolee ou associee a une agenesie renale, avec absence ou non des vesicules seminales, avec ou sans mutation de la mucoviscidose.
In the Planetary Hypotheses, Ptolemy assumes the physical reality of the deferents and epicycles of the Almagest and draws some conclusions: The planets move in a band of space at a certain average distance from the earth; the depth of this band is equal to the diameter of the planet's epicycle; the maximum distance of each planet is equal to the minimum distance of the planet next farthest from the earth.
Recemment, un patient avec azoospermie lors du spermogramme apres vasectomie a gagne son proces pour « grossesse prejudiciable » contre un urologue canadien; une recanalisation ulterieure des canaux deferents avait retabli la fertilite du patient.
A et directeur de la publication d'Al Bayane, la Redaction et l'ensemble du personnel de l'entreprise presentent leurs voeux les plus deferents a SM le Roi Mohammed VI.