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Innocent III

(Encyclopedia)Innocent III, b. 1160 or 1161, d. 1216, pope (1198–1216), an Italian, b. Anagni, named Lotario di Segni; successor of Celestine III. Innocent III was succeeded by Honorius III. Amid all his politi...

glass

(Encyclopedia)glass, hard substance, usually brittle and transparent, composed chiefly of silicates and an alkali fused at high temperature. Glass has become invaluable in modern architecture, illumination, elect...

Constantine I, Roman emperor

(Encyclopedia)Constantine I or Constantine the Great kŏnˈstəntēn, –tīn [key], 288?–337, Roman emperor, b. Naissus (present-day Niš, Serbia). He was the son of Constantius I and Helena and was named in ful...

guilds

(Encyclopedia)guilds or gilds, economic and social associations of persons engaging in the same business or craft, typical of Western Europe in the Middle Ages. Membership was by profession or craft, and the primar...

Macedonia, region, Europe

(Encyclopedia)Macedonia măsˌədōˈnēə [key], region, SE Europe, on the Balkan Peninsula, divided among the countries of Greece, Bulgaria, and North Macedonia. A secret terrorist organization working for Mace...

Arianism

(Encyclopedia)Arianism ârˈēənĭzˌəm [key], Christian heresy founded by Arius in the 4th cent. It was one of the most widespread and divisive heresies in the history of Christianity. As a priest in Alexandria,...

Knights Hospitalers

(Encyclopedia)Knights Hospitalers, members of the military and religious Order of the Hospital of St. John of Jerusalem, sometimes called the Knights of St. John and the Knights of Jerusalem. The symbol of the Orde...

Turks

(Encyclopedia)Turks, term applied in its wider meaning to the Turkic-speaking peoples of Turkey, Russia, Central Asia, Xinjiang in China (Chinese Turkistan), Azerbaijan and the Caucasus, Iran, and Afghanistan. They...

Athens, city, Greece

(Encyclopedia)Athens ăthˈĭnz [key], Gr. Athínai, city (2021 urban agglomeration pop. 3,153,000), capital of Greece, E central Greece, on the plain of Attica, between the Kifisós an...

illumination, in art

(Encyclopedia)illumination, in art, decoration of manuscripts and books with colored, gilded pictures, often referred to as miniatures (see miniature painting); historiated and decorated initials; and ornamental bo...