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antitorque rotor

American  
[an-tee-tawrk, an-tahy-] / ˌæn tiˈtɔrk, ˌæn taɪ- /

noun

Aeronautics.

  1. (on certain helicopters) a small rotor on the tail, turning in the vertical plane and providing a thrust whose torque opposes and compensates for the torque of the main rotor.

Etymology

Origin of antitorque rotor

anti- + torque

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.