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
Using tilt rotors, Midnight is designed to take off and land vertically like a helicopter and then transition into forward flight like a plane.
—
Andrew J. Hawkins, The Verge, 5 June 2024
The unrelenting whirl of police and news helicopter rotors continued for days in early May as the pro-Palestinian encampment on campus was violently attacked and then dismantled.
—Grace Toohey, Los Angeles Times, 4 June 2024
The reel has a premium 10-bearing system and a lightweight C40 carbon rotor with a one-piece bail.
—Max Inchausti, Field & Stream, 30 May 2024
Poor weather conditions are a leading cause of helicopter, or rotor aircraft, crashes.
—Scott Neuman, NPR, 21 May 2024
See all Example Sentences for rotor 
Andrew J. Hawkins, The Verge, 5 June 2024
The unrelenting whirl of police and news helicopter rotors continued for days in early May as the pro-Palestinian encampment on campus was violently attacked and then dismantled.
—Grace Toohey, Los Angeles Times, 4 June 2024
The reel has a premium 10-bearing system and a lightweight C40 carbon rotor with a one-piece bail.
—Max Inchausti, Field & Stream, 30 May 2024
Poor weather conditions are a leading cause of helicopter, or rotor aircraft, crashes.
—Scott Neuman, NPR, 21 May 2024
See all Example Sentences for rotor
These examples are programmatically compiled from various online sources to illustrate current usage of the word 'rotor.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.
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Cite this Entry
“Rotor.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/rotor. Accessed 9 Jun. 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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