Columbia Encyclopedia

(Encyclopedia) mechanized warfare, employment of modern mobile attack and defense tactics that depend upon machines, more particularly upon vehicles powered by gasoline and diesel engines. Central to the waging of m...

(Encyclopedia) tank, military, armored vehicle having caterpillar traction and armed with machine guns, cannon, rockets, or flame throwers. The tank, together with the airplane, opened up modern warfare, which had b...

(Encyclopedia) Polo, Marco märˈkō pōˈlō [key], 1254?–1324?, Venetian traveler in China. His father, Niccolò Polo, and his uncle, Maffeo Polo, had made (1253–60) a trading expedition to Constantinople. A w...

(Encyclopedia) Gama, Vasco da văˈskō də găˈmə, Port. väshˈkō dä gäˈmə [key], c.1469–1524, Portuguese navigator, the first European to journey by sea to India. His epochal voyage (1497–99) was made ...

(Encyclopedia) Pollock, Jackson, 1912–56, American painter, b. Cody, Wyo. He studied (1929–31) in New York City, mainly under Thomas Hart Benton, but he was more strongly influenced by A. P. Ryder and the Mexica...

(Encyclopedia) swamp, shallow body of water in a low-lying, poorly drained depression, usually containing abundant plant growth dominated by trees, such as cypress, and high shrubs. Swamps develop in moist climates,...

(Encyclopedia) Somme, Battles of the, two engagements fought during World War I near the Somme River, N France. The first battle (July–Nov., 1916) was an Allied offensive. The British, commanded by Field Marshal S...

(Encyclopedia) Sherman, William Tecumseh, 1820–91, Union general in the American Civil War, b. Lancaster, Ohio. Sherman is said by many to be the greatest of the Civil War generals. Sherman was promoted to lie...

(Encyclopedia) Miller, Arthur, 1915–2005, American dramatist, b. New York City, grad. Univ. of Michigan, 1938. One of America's most distinguished playwrights, he has been hailed as the finest realist of the 20th-...

(Encyclopedia)  CE5 Internal anatomy of a lamp shell, Magellania, representative of the phylum Brachiopoda Brachiopoda brākēŏpˈədə [key], phylum of shelled sessile or sedentary marine animals, commonly know...