"You canker blossom!" 3 Shakespearean Insults


[roh-ter] /ˈroʊ tər/
Electricity. a rotating member of a machine.
Compare stator (def 1).
Aeronautics. a system of rotating airfoils, as the horizontal ones of a helicopter or of the compressor of a jet engine.
any of a number of tall, cylindrical devices mounted on a special ship (rotor ship) and rotated in such a way that the Magnus effect of wind impinging on the cylinders is used to drive and maneuver the vessel.
(in a self-winding watch) a weight eccentrically mounted on an arbor for keeping the mainspring wound.
Origin of rotor
1873; short for rotator Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
Cite This Source
Examples from the web for rotor
  • But the smaller the turbine, the faster the rotor must spin for its tips to achieve near-sonic speed.
  • The helicopter does not quite fill the bill, simply because its speed is limited on account of the rotor configuration.
  • Army officers learn in a general way to use a helicopter's rotor wash to drive away a crowd, he explained.
  • Army managed to conceal the whomp-whomp of helicopter rotor blades, but photos of the wreckage offer clues.
  • With enough distance between the lee side of one obstacle and the windward side of the next, a rotor can form.
  • When gusts whip the rotor, the generator shaft is free to speed up in response.
  • What a hovering helicopter does is almost identical, moving its rotor in a horizontal plane.
  • When charged with static electricity, the rotor would actually spin.
  • The new craft's body was constructed around a rotor, which allowed the replica to be manipulated atop a five-story-tall column.
  • His grandfather was sliced in half by a rotor in an accident at a mining camp.
British Dictionary definitions for rotor


the rotating member of a machine or device, esp the armature of a motor or generator or the rotating assembly of a turbine Compare stator
a device having blades radiating from a central hub that is rotated to produce thrust to lift and propel a helicopter
the revolving arm of the distributor of an internal-combustion engine
a violent rolling wave of air occurring in the lee of a mountain or hill, in which the air rotates about a horizontal axis
Word Origin
C20: shortened form of rotator
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Cite This Source
Word Origin and History for rotor

1873, irregular shortening of rotator (see rotate (v.)), originally in mathematics. Mechanical sense is attested from 1903; specifically of helicopters from 1930.

Online Etymology Dictionary, © 2010 Douglas Harper
Cite This Source

Word of the Day

Difficulty index for rotor

Most English speakers likely know this word

Word Value for rotor

Scrabble Words With Friends

Nearby words for rotor