Med´eba, a town east of the Jordan, in the tribe of Reuben (; ), before which was fought the great battle in which Joab defeated the Ammonites and their allies (). It originally belonged to the Moabites (); and after the captivity of the tribes beyond the Jordan, they again took possession of it (). The Onomasticon places it near Heshbon; and it was once the seat of one of the thirty-five bishoprics of Arabia (Reland, Palœstina, pp. 217, 223, 226). Medeba, now in ruins, still retains its ancient name, and is situated upon a round hill seven miles south of Heshbon. The ruins are about a mile and a half in circuit, but not a single edifice remains perfect.