Simple Definition of rotor

from our Learner's Dictionary

rotor

noun

ˈroʊtɚ

plural rotors

technical : a part of a machine that turns around a central point

the rotor (blade) of a helicopter

brake rotors

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“Rotor.” Merriam-Webster.com Simple Definition, Merriam-Webster, https://www.merriam-webster.com/simple/rotor. Accessed 21 Jun. 2026.

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