Definition of Fatimid
: a descendant of Fatima, a daughter of Muhammad, and Ali, the cousin of Muhammad and fourth caliph of Islam, regarded by the Shiʽites as a true heir to the caliphate; especially : a member of the Fatimid dynasty ruling portions of North Africa during the period a.d. 909–1171
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Origin and Etymology of fatimid
Fatima †a.d. 632 daughter of Muhammad by his first wife + English -id or -ite
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