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
Shimano hydraulic brakes with 180mm rotors ensure crisp and effective stopping, and an integrated lighting system helps with visibility.
—
Scott Kramer, Forbes, 31 Oct. 2024
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
See all Example Sentences for rotor 
Examples are automatically compiled from online sources to
show current usage.
Read More
Opinions expressed in the examples do not represent those of Merriam-Webster or its editors.
Send us feedback.
Scott Kramer, Forbes, 31 Oct. 2024
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
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 26 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