from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • adj. of or relating to an epicycle


Sorry, no etymologies found.


  • Round and round the bramble bush the students go, driven mad by The Bluebook's arcane, arbitrary rules and epicyclical structure.

    Archive 2006-09-01

  • But we can surely entertain its possibility if we drop two old ideas: the Augustinian nostrum that original sin is personal guilt—which the Magisterium, expressing itself through the CCC, has done cf. §404-405—and the long-popular, epicyclical alternative that a state of purely natural happiness is in store for infants who die unbaptized.

    EENS and limbo: the curve of authentic development

  • The moons, of those solar planets which have them, represent the epi-epicyclical orbits of the Ptolemaic theory.

    Harper's New Monthly Magazine, Vol. 3, July, 1851

  • It must be remembered that the apparent planetary motions are epicyclical, each planet revolving in its own orbit, the epicycle, around the sun, and with the sun, as centre of the epicycle, apparently around the earth in a common orbit, which is called the deferent orbit.

    The Catholic Encyclopedia, Volume 15: Tournely-Zwirner

  • Copernicus, as we have already remarked, did not attack the principle of the epicyclical theory: he merely sought to make it more simple by placing the centre of the earth's orbit in the centre of the universe.

    History of Astronomy

  • In fact, the excellence of Copernicus's book helped to prolong the life of the epicyclical theories in opposition to Kepler's teaching.

    History of Astronomy

  • The 13 inch diameter turbine drives an epicyclical gear train with a 4: 1 ratio for a wheel speed of 3,000 rpm at 200 mph.


  • And, although Ptolemy's epicyclical system was the long established one, it did not have exclusive monopoly.



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