['mɑ:dizәm]
(伊斯兰教)救世主降临说

[ noun ]
belief in the appearance of the Mahdi; devotion to a Mahdi
<noun.cognition>

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.
[Webster 1913 Suppl.]