Stator \Sta"tor\, n. (Mach.) A stationary part in or about which another part (the rotor) revolves, esp. when both are large; as,
   (a) (Elec.) The stationary member of an electrical machine, as of an induction motor.
   (b) (Steam Turbine) The case inclosing a turbine wheel; the body of stationary blades or nozzles.

Source: Webster's Revised Unabridged Dictionary (1913)