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
Divers will return to the waters on Sunday to continue the search for the helicopter’s main rotor and assembly gear box, a key piece that could provide crucial insights into what caused the incident, Schumer said.
—
Alaa Elassar, CNN Money, 13 Apr. 2025
According to Schumer, rescue divers were continuing to search for the helicopter’s main rotor and assembly gear box, which would give clues about what happened.
—Jake Offenhartz, Los Angeles Times, 13 Apr. 2025
The Associated Press reports that in New York City alone 38 people have died in helicopter crashes since 1977, when five people were killed after a rotor broke loose while a helicopter was attempting to land on the Pan Am Building (now called the MetLife Building).
—David Faris, MSNBC Newsweek, 11 Apr. 2025
Moments after a rotor can be seen falling detached from the aircraft itself.
—Jeanine Santucci, USA Today, 11 Apr. 2025
See All Example Sentences for rotor
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Alaa Elassar, CNN Money, 13 Apr. 2025
According to Schumer, rescue divers were continuing to search for the helicopter’s main rotor and assembly gear box, which would give clues about what happened.
—Jake Offenhartz, Los Angeles Times, 13 Apr. 2025
The Associated Press reports that in New York City alone 38 people have died in helicopter crashes since 1977, when five people were killed after a rotor broke loose while a helicopter was attempting to land on the Pan Am Building (now called the MetLife Building).
—David Faris, MSNBC Newsweek, 11 Apr. 2025
Moments after a rotor can be seen falling detached from the aircraft itself.
—Jeanine Santucci, USA Today, 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 4 May. 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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