1
a
: a part that revolves in a stationary part
a brake rotor
b
: the rotating member of an electrical machine
2
: an assembly of rotating blades that supplies lift or stability for a rotorcraft
Examples of rotor in a Sentence
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Grid power or solar panels run a constantly spinning rotor inside a unit about the size of a dishwasher, converting the power into kinetic energy that can be reconverted back into electricity in the case of a power outage.
—
Chris Stokel-Walker, TIME, 30 Oct. 2024
Lilium claims the design will deliver higher passenger capacity, lower noise levels and better maneuverability than its competitors that typically use tilting rotors.
—Michael Verdon, Robb Report, 25 Oct. 2024
Equipped with working features like rotor blades that spin; doors that open and close; a fold-down bench, jump seat, and tool station; and a detachable rescue basket, this flyer has seemingly endless playful possibilities.
—Pamela Brill, Parents, 24 Oct. 2024
The helicopter's main rotor detached from the collision and the aircraft plummeted to the ground.
—Quinlan Bentley, The Enquirer, 24 Oct. 2024
See all Example Sentences for rotor 
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Chris Stokel-Walker, TIME, 30 Oct. 2024
Lilium claims the design will deliver higher passenger capacity, lower noise levels and better maneuverability than its competitors that typically use tilting rotors.
—Michael Verdon, Robb Report, 25 Oct. 2024
Equipped with working features like rotor blades that spin; doors that open and close; a fold-down bench, jump seat, and tool station; and a detachable rescue basket, this flyer has seemingly endless playful possibilities.
—Pamela Brill, Parents, 24 Oct. 2024
The helicopter's main rotor detached from the collision and the aircraft plummeted to the ground.
—Quinlan Bentley, The Enquirer, 24 Oct. 2024
See all Example Sentences for rotor
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Cite this Entry
“Rotor.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/rotor. Accessed 16 Nov. 2024.
Copy CitationKids Definition
rotor
noun
ro·tor
ˈrōt-ər 
1
: a part that rotates in a stationary part (as in an electrical machine)
2
: a complete system of rotating blades that support a helicopter in flight
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