HyperDic: planet_gear

English > 1 sense of the expression planet gear:
NOUNartifactplanet gear, planetary gear, epicyclic gear, planet wheelan outer gear that revolves about a central sun gear of an epicyclic train
English > planet gear: 1 sense > noun 1, artifact
MeaningAn outer gear that revolves about a central sun gear of an epicyclic train.
Synonymsplanetary gear, epicyclic gear, planet wheel
Part ofepicyclic train, epicyclic gear trainA system of epicyclic gears in which at least one wheel axis itself revolves about another fixed axis
Broadergear, gear wheel, geared wheel, cogwheelA toothed wheel that engages another toothed mechanism in order to change the speed or direction of transmitted motion

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