Mahdism \Mah"dism\, n.
Belief in the coming of the Mahdi; fanatical devotion to the
cause of the Mahdi or a pretender to that title. --
{Mah"dist}, n.
Mahdism has proved the most shameful and terrible
instrument of bloodshed and oppression which the modern
world has ever witnessed. --E. N.
Bennett.