The Collaborative International Dictionary
Epicyclic train
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.
WordNet
epicyclic train
n. a system of epicyclic gears in which at least one wheel axis itself revolves about another fixed axis [syn: epicyclic gear train]