Look up rotor in Wiktionary, the free dictionary.

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(Crank), a variable-angle bicycle crank
• 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:

• Rotor syndrome, a rare liver disorder

In music:

• Rotor (band), a German progressive stoner rock band

In biology and chemistry:

• The rotating part of a centrifuge, which also holds the samples

In other fields:

• SC Rotor Volgograd, a Russian football club
• Rotor (Sonic the Hedgehog), a fictional character from the Sonic the Hedgehog universe
• Rotor (ride), the trade name for an amusement ride
• Rotor (meteorology), a turbulent horizontal vortex that forms in the trough of lee waves
• Rotor (mathematics), an n-blade object in geometric algebra, which rotates another n-blade object about a fixed or translated point
• Curl (mathematics), known as rotor in some countries, a vector operator that shows a vector field's rate of rotation
• Rotor, a space colony in Isaac Asimov's book Nemesis
• R.O.T.O.R., a 1989 science fiction/action movie
• Vibrator (sex toy), a Japanese usage of similar sounds in English. Also spelt as rotar.

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