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Mamun, al-

(Encyclopedia)Mamun, al- (Abu al-Abbas Abd Allah al-Mamun) mämo͞onˈ [key], 786–833, 7th Abbasid caliph (813–33); son of Harun ar-Rashid. He succeeded his brother al-Amin after a bitter civil war, but was una...

Lerner, Alan Jay

(Encyclopedia)Lerner, Alan Jay, 1918–86, American lyricist and librettist, b. New York City. After two years as a radio scriptwriter, Lerner began an association with the composer Frederick Loewe that resulted in...

Arequipa

(Encyclopedia)Arequipa ärākēˈpä [key], city (2020 pop. 923,000), alt. c.7,550 ft (2,300 m), capital of Arequipa dept., S Peru, on the Chili River. One of Peru's largest cities, it ...

Lacaille, Nicolas Louis de

(Encyclopedia)Lacaille, Nicolas Louis de nēkôläˈ lwē də läkäˈyə [key], 1713–62, French astronomer. As a result of his success in making meridional measurements in France under the patronage of the duke ...

Bytom

(Encyclopedia)Bytom bĭˈtôm [key], Ger. Beuthen, city (1994 est. pop. 232,400), Śląskie prov., SW Poland, in the Katowice mining region. An important heavy industrial center, it has iron- and steelworks and the...

Borodin, Aleksandr Porfirevich

(Encyclopedia)Borodin, Aleksandr Porfirevich əlyĭksänˈdər pərfēˈrĭvĭch bôrôdyēnˈ [key], 1833–87, Russian composer, chemist, and physician. He studied at the academy of medicine in St. Petersburg, wh...

Abdallahi, Sidi Ould Cheikh

(Encyclopedia)Abdallahi, Sidi Ould Cheikh sēˈdē o͞old shāk äbdəläˈē [key], 1937–2020, Mauritanian political leader, president of Mauritania (2007–8), b. Aleg. Trai...

Tarbes

(Encyclopedia)Tarbes tärb [key], city (1990 pop. 50,228), capital of Hautes-Pyrénées dept., SW France, on the Adour River. It is an industrial, commercial, and tourist center in a cattle- and horse-raising area....

Wayne, John

(Encyclopedia)Wayne, John, 1907–79, American movie actor, b. Winterset, Iowa, as Marion Michael Morrison. An enduringly popular movie star from his debut in 1930, Wayne combined the toughness necessary to play we...

weather vane

(Encyclopedia)weather vane or wind vane, instrument used to indicate wind direction. It consists of an asymmetrically shaped object, e.g., an arrow or a rooster, mounted at its center of gravity so it can move free...