noun
an outer gear that revolves about a central sun gear of an epicyclic train
• Syn: ↑planetary gear, ↑epicyclic gear, ↑planet wheel
• Hypernyms: ↑gear, ↑gear wheel, ↑geared wheel, ↑cogwheel
• Part Holonyms: ↑epicyclic train, ↑epicyclic gear train
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noun* * *
Mach.
any of the gears in an epicyclic train surrounding and engaging with the sun gear. Also called planet wheel.
[1915-20]
Useful english dictionary. 2012.