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
Recent Examples on the Web
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
The e-motor’s stator and rotor sit in what’s called a Halbach array, which targets and maximizes the density of the magnetic field.
—Jason Barlow, WIRED, 17 Oct. 2024
See all Example Sentences for rotor 
These examples are automatically compiled from online sources to
illustrate current usage. Opinions expressed in the examples do not represent those of
Merriam-Webster or its editors.
Send us feedback
about these examples.
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
The e-motor’s stator and rotor sit in what’s called a Halbach array, which targets and maximizes the density of the magnetic field.
—Jason Barlow, WIRED, 17 Oct. 2024
See all Example Sentences for rotor
Articles Related to rotor
Dictionary Entries Near rotor
Cite this Entry
“Rotor.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/rotor. Accessed 8 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
Love words? Need even more definitions?
Merriam-Webster unabridged
Share