The Collaborative International Dictionary
epicyclic \ep`i*cyc"lic\, epicyclical \ep`i*cyc"lic*al\, a. Pertaining to, resembling, or having the motion of, an epicycle.
Epicyclic train (Mach.), a train of mechanism in which epicyclic motion is involved; esp., a train of spur wheels, bevel wheels, or belt pulleys, in which an arm, carrying one or more of the wheels, sweeps around a center lying in an axis common to the other wheels.
Wiktionary
a. of, or relating to epicycles
WordNet
adj. of or relating to an epicycle; "epicyclic gear train" [syn: epicyclical]
Usage examples of "epicyclic".
Springs, alembics, coils of copper tubing, buckled sheets of metal, gear systems both rack-and-pinion and epicyclic, pendulums, levers, cams, cranks, differentials, bearings, pulleys, assorted tools, and stone jars containing alkahest and corrosive substances crowded every horizontal surface.