Entry 1 sense Webster, 1913 stator /(stā"tẽr; stăt"ẽr)/ · sta·tor · IPA 01 n. A stationary part in or about which another part (the rotor) revolves, esp. when both are large; 1. A stationary part in or about which another part (the rotor) revolves, esp. when both are large;(Mach.)