Attrahent \At"tra*hent\, a. [L. attrahens, p. pr. of attrahere. See {Attract}, v. t.] Attracting; drawing; attractive. Attrahent \At"tra*hent\, n. 1. That which attracts, as a magnet. The motion of the steel to its attrahent. --Glanvill. 2. (Med.) A substance which, by irritating the surface, excites action in the part to which it is applied, as a blister, an epispastic, a sinapism.