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Abadan

(Encyclopedia)Abadan ăbədănˈ, äbädänˈ [key], city, Khuzestan prov., SW Iran, on Abadan Island, in the delta of the Shatt al Arab, at the head of the Persian Gulf. It is the term...

Tarik ibn Ziyad

(Encyclopedia)Tarik ibn Ziyad täˈrĭk [key], fl. 711, Berber leader of the Muslim invaders of Spain. When the heirs of the Visigothic king, Witiza, requested help from the Moors of N Africa against the usurper Ro...

Ctesiphon

(Encyclopedia)Ctesiphon tĕsˈĭfŏnˌ, tēˈsĭ– [key], ruined ancient city, 20 mi (32 km) SE of Baghdad, Iraq, on the left bank of the Tigris opposite Seleucia and at the mouth of the Diyala River. After 129 b....

Daddi, Bernardo

(Encyclopedia)Daddi, Bernardo bārnärˈdō dädˈdē [key], fl. 1312–48, Italian painter of the Florentine school. First influenced by his contemporary Giotto, he soon adopted the delicate line and lyrical expre...

Algardi, Alessandro

(Encyclopedia)Algardi, Alessandro älās-sänˈdrō älgärˈdē [key], 1595–1654, Italian sculptor and designer, b. Bologna. He studied under Lodovico Carracci. In Rome his friend Domenichino obtained his first ...

alkali

(Encyclopedia)alkali ălˈkəlī [key] [Arab., al-gili=ashes of saltwort], hydroxide of an alkali metal. Alkalies are readily soluble in water and form strongly basic solutions with a characteristic acrid taste. Th...

greenhouse

(Encyclopedia)greenhouse, enclosed glass house used for growing plants in regulated temperatures, humidity, and ventilation. A greenhouse can range from a small room carrying a few plants over the winter, to an imm...

Trudeau, Edward Livingston

(Encyclopedia)Trudeau, Edward Livingston tro͞oˈdō [key], 1848–1915, American physician, b. New York City, M.D. Columbia, 1871. As a result of taking care of his brother, who had tuberculosis, he developed the ...

turquoise

(Encyclopedia)turquoise, hydrous phosphate of aluminum and copper, Al2(OH)3PO4·H2O+Cu, used as a gem. It occurs rarely in crystal form, but is usually cryptocrystalline. Turquoise is opaque and has a waxy luster; ...

Union League Clubs

(Encyclopedia)Union League Clubs, in U.S. history, organizations formed throughout the North in the Civil War after the military defeats and Republican election losses of 1862. A convention at Cleveland (May, 1863)...