Rheocrat

1 definition found

From The Collaborative International Dictionary of English v.0.48 [gcide]:

  Rheocrat \Rhe"o*crat\, n. [Gr. "rei^n to flow + kratei^n to
     rule.] (Elec.)
     A kind of motor speed controller permitting of very gradual
     variation in speed and of reverse. It is especially suitable
     for use with motor driven machine tools.
     [Webster 1913 Suppl.]