Mah″di (?), n. Among Mohammedans, the last imam or leader of the faithful. The Sunni, the largest sect of the Mohammedans, believe that he is yet to appear.
☞ The title has been taken by several persons in countries where Mohammedanism prevails, — notably by Mohammad Ahmed, who overran the Egyptian Sudan, and in 1885 captured Khartum, his soldiers killing General Gordon, an Englishman, who was then the Egyptian governor of the region.