antitorque rotor

noun

an·​ti·​torque rotor

: a small rotor mounted on the tail of a helicopter that balances the torque reaction of the main lifting rotor and thus permits the craft to maintain a desired heading

Word History

Etymology

anti- entry 1 + torque entry 2

The Ultimate Dictionary Awaits

Expand your vocabulary and dive deeper into language with Merriam-Webster Unabridged.

1. Expanded definitions
2. Detailed etymologies
3. Advanced search tools
4. All ad-free

Discover what makes Merriam-Webster Unabridged the essential choice for true word lovers.

Start Your Free Trial Now