Rotor

Rotor may refer to:

A rotating part of a mechanical device, for example in an electric motor, generator, alternator or pump.

In engineering:

Rotor (electric), the non-stationary part of an alternator or electric motor, operating with a stationary element called the stator.
Helicopter rotor, the rotary wing(s) of a rotorcraft such as a helicopter
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 (brake mechanism), a device that allows the handlebars and fork to revolve indefinitely without tangling the rear brake cable
Rotor (distributor), a component of the ignition system of an internal combustion engine
Rotor (engine), the powered part of a pistonless rotary 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 mathematics:

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

In medicine:

In biology and chemistry:

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, a space colony in Isaac Asimov's novel 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.