Definition: The Abbasid dynasty controlled the Muslim caliphate from 750 to 1258. It was the second of the two greatest dynasties, overthrowing the Umayyads to gain control, and destroyed by the invasion of the Mongols. The Abbasids were noted for promoting commerce and encouraging the arts, especially during the reigns of al-Mansur, Harun ar-Rashid, and al-Ma'mun.
Common Misspellings: Abasids
Examples:The Abbasid caliphs based their claim to the throne on their descent from the uncle of Muhammad.
The period that Abbasids ruled Baghdad was one of extraordinary splendor.