Meaning of counter electromotive force

coun'ter electromo'tive force'

Pronunciation: [key]
— Elect. Elect.
  1. an electromotive force that is created by a chemical or magnetic effect upon a circuit and that acts in opposition to the applied electromotive force of the circuit. Also called
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.