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AIDS, in medicine

(Encyclopedia)AIDS or acquired immunodeficiency syndrome, fatal disease caused by a rapidly mutating retrovirus that attacks the immune system and leaves the victim vulnerable to infections, malignancies, and neuro...

commerce, in economics

(Encyclopedia)commerce, traffic in goods, usually thought of as trade between states or nations. Engaged in by all peoples from the earliest times, it has been carried on in some areas and by some peoples more than...

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...

Ibn Batuta

(Encyclopedia)Ibn Batuta ĭˈbən bäto͞oˈtä [key], 1304?–1378?, Muslim traveler, b. Tangier. No other medieval traveler is known to have journeyed so extensively. In 30 years (from c.1325) he made a series of...

tenure, in law

(Encyclopedia)tenure, in law, manner in which property in land is held. The nature of tenure has long been of great importance, both in law and in the broader economic and political context. Tenure has varied great...

hadith

(Encyclopedia)hadith hädēthˈ [key], a tradition or the collection of the traditions of Muhammad, the Prophet of Islam, including his sayings and deeds, and his tacit approval of what was said or done in his pres...

Organization of Islamic Cooperation

(Encyclopedia)Organization of Islamic Cooperation (OIC), international organization of 57 countries whose inhabitants are mainly Muslim, est. 1969 as the Organization of the Islamic Conference, renamed 2011. It is ...

Moorish art and architecture

(Encyclopedia)Moorish art and architecture, branch of Islamic art and architecture developed in the westernmost lands of the Muslims, known as the Maghreb: N Africa and Spain. The Great Mosque at Al Qayrawan in Tun...

snake, in zoology

(Encyclopedia)snake, common name for an elongated, limbless reptile of the order Squamata, which also includes the xlizards. Most snakes live on the ground, but some are burrowers, arboreal, or aquatic; one group i...

Ahmadiyya

(Encyclopedia)Ahmadiyya äh mə dēˈ yə [key], a contemporary messianic movement founded (1899) by Mirza Ghulam Ahmad (1839–1908), b. Qadiyan, the Punjab. His Barahin-i Ahmadiyya, which he began to publish in 1...