Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun planet_gear

1 sense of planet gear

Sense 1
planetary gear, epicyclic gear, planet wheel, planet gear -- (an outer gear that revolves about a central sun gear of an epicyclic train)
       => gear, gear wheel, geared wheel, cogwheel -- (a toothed wheel that engages another toothed mechanism in order to change the speed or direction of transmitted motion)