WordReference Random House Unabridged Dictionary of American English © 2025
plan′et gear′, [Mach.]
  1. Mechanical Engineeringany of the gears in an epicyclic train surrounding and engaging with the sun gear. Also called plan′et wheel′. 
  • 1915–20

'planet gear' also found in these entries (note: many are not synonyms or translations):
sun-and-planet gear

Forum discussions with the word(s) "planet gear" in the title:


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