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Witelo of Silesia

(Encyclopedia)Witelo of Silesia or Vitelo, c.1230–75, Silesian physicist, philosopher, and theologian. He studied in Paris and Padua and spent time at the papal palace in Viterbo, Italy. His ten-volume work on op...

Medina, city, Saudi Arabia

(Encyclopedia)Medina mĭdēˈnə [key], Arabic Medinat an-Nabi [city of the Prophet] or Madinat Rasul Allah [city of the apostle of Allah], city (1993 pop. 608,226), Hejaz, W Saudi Arabia. It is situated c.110 mi (...

Abu Dhabi

(Encyclopedia)Abu Dhabi äˈbo͞o ᵺäˈbē, zä–, dä– [key], Arab. Abu Zabi, sheikhdom, c.26,000 sq mi (67,300 sq km), part of the federation of seven United Arab Emirate...

Marrakech

(Encyclopedia)Marrakech or Marrakesh both: märäˈkĕsh, mə– [key], city (1994 pop. 672,478), W central Morocco. The city, renowned for leather goods, is one of the principal commercial centers of Morocco and a...

Abbas

(Encyclopedia)Abbas äbäsˈ, ăbäsˈ, ăbˈəs [key], d. 653, uncle of Muhammad the Prophet and of Ali the caliph. A wealthy merchant of Mecca, he was at first opposed to the religious movement initiated by his n...

Tabari

(Encyclopedia)Tabari (Abu Jafar Muhammad ibn Jarir at-Tabari) täbäˈrē [key], c.839–c.923, Arab historian and commentator. The name Tabari was given him because he was born in Tabaristan, Persia. He traveled w...

Kurdufan

(Encyclopedia)Kurdufan kôrˌdəfănˈ [key], region (1983 pop. 3,093,294), S central Sudan. Kurdufan is divided into Northern and Southern Kurdufan states. Its terrain, generally level in the north, rises in the s...

Idrisids

(Encyclopedia)Idrisids ĭdˈrĭsĭdzˌ [key], two historic Muslim families. 1 An Arab Shiite dynasty of Morocco (788–974), founded by Idris I, a descendant of caliph Ali. It was the first Shiite dynasty in the hi...

Nimeiri, Muhammed Jaafar al-

(Encyclopedia)Nimeiri or Nimeiry, Muhammed Jaafar al- mo͞ohämˈmäd jäfärˈ äl-nĭmārˈē [key], 1930–, Sudanese army officer and politician. Early active in the Sudanese nationalist movement, he was tempor...

Omdurman

(Encyclopedia)Omdurman ŏmdərmänˈ [key], Arab. Umm Durman, city (1993 pop. 1,271,403), E central Sudan, on the White Nile opposite Khartoum. It is the largest city and chief commercial center of Sudan and part o...