noun
an outer gear that revolves about a central sun gear of an epicyclic train
• Syn: ↑planetary gear, ↑planet wheel, ↑planet gear
• Hypernyms: ↑gear, ↑gear wheel, ↑geared wheel, ↑cogwheel
• Part Holonyms: ↑epicyclic train, ↑epicyclic gear train
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epicyclic gear noun
A system of gears consisting of one or more wheels travelling round the outside or inside of another wheel whose axis is fixed
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Main Entry: ↑epicycle
Useful english dictionary. 2012.