Pronunciation: (plan'i-ter"ē), [key]
1. of, pertaining to, or resembling a planet or the planets.
2. wandering; erratic.
3. terrestrial; global.
4. Mach.noting or pertaining to an epicyclic gear train in which a sun gear is linked to one or more planet gears also engaging with an encircling ring gear.
Mach.a planetary gear train.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.