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
Though weather conditions during the rescue were not favorable, Frevola said the team was focused on finding the tail and main rotors of the aircraft to aid in the investigation.
—
Alexandra Koch, FOXNews.com, 17 Apr. 2025
The rotor of the helicopter from last week's deadly crash has been retrieved from the Hudson River, four days after the devastating accident that killed all six people on board, according to a statement from the National Transportation Safety Board.
—Emily Shapiro, ABC News, 14 Apr. 2025
Officials haven't determined the cause of the crash, but aviation experts said video of the crash appears to indicate a catastrophic failure of the helicopter's rotor, which was seen detached.
—Jeanine Santucci, USA Today, 12 Apr. 2025
One directive from May 2023, required the testing and possible replacement of tail rotor drive shafts on eight different Bell 206L models, including the 206L-4.
—John Miller, CNN Money, 11 Apr. 2025
See All Example Sentences for rotor
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Alexandra Koch, FOXNews.com, 17 Apr. 2025
The rotor of the helicopter from last week's deadly crash has been retrieved from the Hudson River, four days after the devastating accident that killed all six people on board, according to a statement from the National Transportation Safety Board.
—Emily Shapiro, ABC News, 14 Apr. 2025
Officials haven't determined the cause of the crash, but aviation experts said video of the crash appears to indicate a catastrophic failure of the helicopter's rotor, which was seen detached.
—Jeanine Santucci, USA Today, 12 Apr. 2025
One directive from May 2023, required the testing and possible replacement of tail rotor drive shafts on eight different Bell 206L models, including the 206L-4.
—John Miller, CNN Money, 11 Apr. 2025
See All Example Sentences for rotor
Cite this Entry
“Rotor.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/rotor. Accessed 21 Apr. 2025.
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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