[ suhn-uhn-plan-it ]
/ ˈsʌn ənˈplæn ɪt /
a planetary epicyclic gear train.
DON’T VACILLATE! VANQUISH THIS WORD OF THE DAY QUIZ!
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Question 1 of 7
What does “vacillate” mean?
Origin of sun-and-planet gear
First recorded in 1900–05
Words nearby sun-and-planet gear
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020