\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.