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Demetrius I, king of Macedon

(Encyclopedia)Demetrius I (Demetrius Poliorcetes) dĭmēˈtrēəs pŏlˌēôrsēˈtēz [key], c.337–283 b.c., king of Macedon. The son of Antigonus I, he proved himself a very able commander in his father's wars,...

Khan, Abdul Qadeer

(Encyclopedia)Khan, Abdul Qadeer (A. Q. Khan), 1936–, Pakistani metallurgical engineer, often called the father of Pakistan's atomic bomb, b. Bhopal, India. He moved (1952) to Pakistan and studied at the D. J. Sc...

mast

(Encyclopedia)mast, large metal or timber pole secured vertically or nearly vertically in a ship, used primarily for supporting sails and rigging. The mast is as old as sailing vessels, and the oldest sailboats dep...

citron

(Encyclopedia)citron sĭtˈrən [key], name for a tree (Citrus medica) of the family Rutaceae (orange family), and for its fruit, the earliest of the citrus fruits to be introduced to Europe from Asia. The small ev...

gall bladder

(Encyclopedia)CE5 Gall bladder gall bladder, small pear-shaped sac that stores and concentrates bile. It is connected to the liver (which produces the bile) by the hepatic duct. When food containing fat reaches...

endoscope

(Encyclopedia)endoscope, any instrument used to look inside the body. Usually consisting of a fiber-optic tube attached to a viewing device, endoscopes are used to explore and biopsy such areas as the colon and the...

Palermo stone

(Encyclopedia)Palermo stone, ancient Egyptian stone of black diorite engraved toward the end of the 5th dynasty (2565–2420 b.c.) and containing the earliest extant annals. The stone is only a small fragment of wh...

corvette

(Encyclopedia)corvette, small warship, classed between a frigate and a sloop-of-war. Corvettes usually were flush-decked and carried fewer than 28 guns. They were widely employed in escorting convoys and attacking ...

Glorioso Islands

(Encyclopedia)Glorioso Islands glōrˌēōˈsō, –zō [key], Fr. Îles Glorieuses, island group, c.2 sq mi (5 sq km), in the Mozambique Channel, W Indian Ocean, 125 mi (200 km) WNW of N Madagascar, part of the Sc...

Paterson, William, American political leader and jurist

(Encyclopedia)Paterson, William, 1745–1806, American political leader and jurist, b. Co. Antrim, Ireland. He emigrated to America as a child. Raised in New Jersey, he practiced law there and was attorney general ...