From The Collaborative International Dictionary of English v.0.48 [gcide]:
epicyclic \ep`i*cyc"lic\, epicyclical \ep`i*cyc"lic*al\, a.
Pertaining to, resembling, or having the motion of, an
epicycle.
[1913 Webster]
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.
[1913 Webster]
From WordNet (r) 3.0 (2006) [wn]:
epicyclic train
n 1: a system of epicyclic gears in which at least one wheel
axis itself revolves about another fixed axis [syn:
epicyclic train, epicyclic gear train]