rotor

noun
ro·​tor | \ ˈrō-tər How to pronounce rotor (audio) \

Definition of rotor

1a : 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

Specifically, Kaman may accelerate investment in the unmanned K-MAX helicopter platform and new composite rotor blades, Keating said. Stephen Singer, courant.com, "Kaman to sell distribution business for $700M and focus on booming aviation markets," 26 June 2019 Electric motors, whether AC or DC, work by causing a magnetic field in the rotating part (rotor) to interact with a magnetic field in the stationary part (stator) of the machine. The Economist, "Do electric cars dream of software fixes?," 22 Apr. 2018 Two years before that, in July 2007, a Liberty sightseeing chopper carrying eight people suffered a rotor blade separation midflight and crashed into the Hudson River. Emanuella Grinberg, CNN, "Deadly helicopter crash renews calls to ban flights over Manhattan," 10 June 2019 In 1977, four people waiting on the roof were killed when a helicopter toppled over and a rotor blade broke off and hit them. Jim Mustian, Twin Cities, "Helicopter crashes on roof of NYC skyscraper; pilot killed," 10 June 2019 In 1977, four people waiting on the roof were killed when a helicopter toppled over and a rotor blade broke off and hit them. Jim Mustian, Anchorage Daily News, "Helicopter crashes on roof of NYC skyscraper; pilot killed," 10 June 2019 This craft has eight rotors, which act as propellers for take-off and landing. The Economist, "An innovative approach to making electricity from the wind," 7 June 2019 Phoenix Fire Department officials say the woman was treated for dizziness and nausea but suffered no other ill effects when the stretcher spun ever-faster in the backwash of the helicopter's rotor blades. orlandosentinel.com, "Watch: Helicopter rescue goes awry as 74-year-old hiker spins out of control underneath," 6 June 2019 The drone has a central compartment for carrying goods and a hexagonal shrouding that acts as its wings, while also protecting (and shielding people from) a series of rotors. Rachel Metz, CNN, "Amazon's new futuristic drone will soon deliver packages," 5 June 2019

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.

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First Known Use of rotor

1892, in the meaning defined at sense 1a

History and Etymology for rotor

contraction of rotator

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Dictionary Entries near rotor

rotometer

roton

rotonda

rotor

rotor blade

rotorcraft

rotor disk

Statistics for rotor

Last Updated

9 Jul 2019

Look-up Popularity

Time Traveler for rotor

The first known use of rotor was in 1892

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More Definitions for rotor

rotor

noun

English Language Learners Definition of rotor

technical : a part of a machine that turns around a central point

rotor

noun
ro·​tor | \ ˈrō-tər How to pronounce rotor (audio) \

Kids Definition of rotor

1 : the part of an electrical machine that turns
2 : a system of spinning horizontal blades that support a helicopter in the air

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More from Merriam-Webster on rotor

Rhyming Dictionary: Words that rhyme with rotor

Spanish Central: Translation of rotor

Nglish: Translation of rotor for Spanish Speakers

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