Definition of rotor
1a : a part that revolves in a stationary part a brake rotorb : the rotating member of an electrical machine
2 : an assembly of rotating blades that supplies lift or stability for a rotorcraft
Recent Examples of rotor from the Web
Sweeney operated a $25,000 hexacopter, a drone with six rotors.
Moments into the new route, the rotors on Burkel’s helicopter became ensnared in a surveillance balloon tether.
In addition to the standard iron rotors, the RS5 is available with optional—and huge—front carbon-ceramic brakes as part of the Dynamic Plus package.
Rotor nozzle heads are generally used for large areas of shrubs, trees and turf.
Other favorites: Truck spring coil lamp ($175); floor lamps with salvaged metal gas cans for shades and brake rotors as bases ($295 to $450).
It was attached to a small drone equipped with four small propeller-like rotors, a global positioning device and camera.
The drone in question weighs about 12.5 pounds and uses eight rotors to achieve speeds of up to 47 miles per hour.
For the study, the researchers used an eight-rotor, 5.7kg drone with a maximum cruising speed of 75km per hour.
These example sentences are selected automatically from various online news sources to reflect current usage of the word 'rotor.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.
Origin and Etymology of rotor
contraction of rotator
First Known Use: 1892See Words from the same year
ROTOR Defined for English Language Learners
Definition of rotor for English Language Learners
: a part of a machine that turns around a central point
ROTOR Defined for Kids
Definition of rotor for Students
1 : the part of an electrical machine that turns
2 : a system of spinning horizontal blades that support a helicopter in the air
Seen and Heard
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