interference

(in-tur-fer'ens) [L. inter, between, -|- ferire, to strike.] i. The coming together of waves from different sources in such a way that the crests of one series correspond to the hollows of the other, the two thus neutralizing each other; or so that the crests of the two series correspond, thus increasing the excursions of the waves. 2, Brushing, in the horse.