/plan"i ter'ee/ , adj.
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.
n.
5. Mach. a planetary gear train.
[ 1585-95; planetarius. See PLANET, -ARY ]