AskDefine | Define rotor

Dictionary Definition



1 the rotating armature of a motor or generator [syn: rotor coil] [ant: stator]
2 the revolving bar of a distributor
3 rotating mechanism consisting of an assembly of rotating airfoils; horizontal rotors on a helicopter or compressor rotors of a jet engine

User Contributed Dictionary

see Rotor



  1. A rotating part of a mechanical device, for example in an electric motor, generator, alternator or pump.
  2. The wing of a helicopter or similar aircraft


  • Croatian: rotor
  • Finnish: roottori
  • German: Rotor
  • Italian: rotore
  • Norwegian: rotor

Related terms



  1. rotor


Extensive Definition

Rotor may refer to:
In engineering:
  • Helicopter rotor, the rotary wing(s) of a rotorcraft such as a helicopter
  • Rotor (electric), the non-stationary part of an alternator or electric motor, operating with a stationary element called the stator.
  • ROTOR, a former radar project in the UK following the Second World War
  • Rotor (turbine), the rotor of a turbine powered by fluid pressure
  • Rotor (brake), the disc of a disc brake, in U.S. terminology
  • Rotor (distributor), a component of the ignition system of an internal combustion engine
  • Rotor (engine), the rotary piston in a rotary combustion engine
  • Rotor (antenna), an electric motor that rotates an antenna to the direction of transmission or reception
In computing:
  • Rotor machine, the rotating wheels used in certain cipher machines, such as the German Enigma machine
  • Rotor (software project), the former code name for Microsoft's shared source implementation of its Common Language Infrastructure
In medicine:
In music:
In other fields:
rotor in Czech: Rotor
rotor in Spanish: Rotor
rotor in Galician: Rotor
rotor in Dutch: Rotor
rotor in Japanese: ローター
rotor in Norwegian: Rotor
rotor in Polish: Rotor
rotor in Serbian: Ротор

Synonyms, Antonyms and Related Words

airscrew, carousel, disk, driver, fan, impeller, merry-go-round, paddle wheel, piston, prop, propellant, propeller, propulsor, roller, rolling stone, rotator, roundabout, rundle, screw, screw propeller, top, turbine, twin screws, wheel, whirlabout, whirler, whirligig
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