belief in the appearance of the Mahdi; devotion to a Mahdi
Mahdism (Persian: مَهدَویّت, Arabic: المهدوية) in the Twelver branch of Shia Islam, derived from the belief in the reappearance of the Twelfth Shiite Imam, Muhammad al-Mahdi as the savior of the apocalypse for the salvation of human beings and the establishment of peace and justice. Mahdism is a kind of messianism. From this perspective, it is believed that Jesus Christ and Khidr are still alive and will emerge with Muhammad al-Mahdi in order to fulfil their mission of bringing peace and justice to the world.
Mahdism is a religious concept or belief in the arrival of a "Mahdi", a guided one or savior, considered in Islamic eschatology as a messianic figure who, it is believed, will appear before the Day of Judgment and will rid the world of evil and injustice, establishing a global era of peace and righteousness. The concept is strongly held in Sunni and Shi'a Islam, although the interpretations and expectations differ in each sect.
The Nuttall Encyclopedia
a hope cherished by devout Moslems of a Mahdi to come who will lead them on to victory against the infidel and to the conquest of the world.
The numerical value of mahdism in Chaldean Numerology is: 4
The numerical value of mahdism in Pythagorean Numerology is: 4