Look up: epicycle

1. 
   epicycle
   [n] - a circle that rolls around (inside or outside) another circle
   Found on http://www.webdictionary.co.uk/definitio
   
   
2. 
   Epicycle
   Definition (keystage 4) When we draw an epicycloid by rolling one circle around the outside of another, the moving circle is called the epicycle.
   Found on http://thesaurus.maths.org/mmkb/entry.ht
   
   
3. 
   Epicycle
   Ep'i·cy`cle noun [ Latin epicyclus , Greek ...; 'epi` upon + ... circle. See Cycle .] 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 ...
   Found on http://www.encyclo.co.uk/webster/E/54
   
   
4. 
   epicycle
   1. 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 ...
   Found on http://www.mondofacto.com/facts/dictiona
   
   
5. 
   epicycle
   noun a circle that rolls around (inside or outside) another circle; generates an epicycloid or hypocycloid
   Found on http://wordnet.princeton.edu/perl/webwn?
   
   
6. 
   Epicycle
   • (n.) A circle which rolls on the circumference of another circle, either externally or internally. • (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 ...
   Found on http://thinkexist.com/dictionary/meaning
   
   
7. 
   epicycle
   (from the article `mechanics`) ...the Earth. This picture worked well enough for the stars but not for the planets. To `save the appearances` (fit the observations) an elaborate ... ...direction of motion occasionally but resume the dominant direction of motion after a while. To describe this variable motion, Ptolemy assumed t...
   Found on http://www.britannica.com/eb/a-z/e/36
   
   
8. 
   epicycle
   A small orbit within a larger orbit that was used (mistakenly) to describe the movements of celestial objects in the Ptolemaic system (about AD 150). In Ptolemy's model of the Solar System, the Sun, the Moon, or a planet moved in an epicycle, the center of which traveled along a bigger circular orbi...
   Found on http://www.daviddarling.info/encyclopedi
   
   
9. 
   epicycle
   epicycle: see Ptolemaic system.
   Found on http://www.infoplease.com/ce6/sci/A09131