Definition of rotor
1a : a part that revolves in a stationary part a brake rotorb : the rotating member of an electrical machine
2 : an assembly of rotating blades that supplies lift or stability for a rotorcraft
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Origin and Etymology of rotor
contraction of rotator
First Known Use: 1892
ROTOR Defined for English Language Learners
rotor
playDefinition of rotor for English Language Learners
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: a part of a machine that turns around a central point
ROTOR Defined for Kids
rotor
playDefinition of rotor for Students
1 : the part of an electrical machine that turns
2 : a system of spinning horizontal blades that support a helicopter in the air
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See words that rhyme with rotor Spanish Central: Translation of rotor Nglish: Translation of rotor for Spanish speakers
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