Columbia Encyclopedia

Search results

500 results found

Bradford, city, England

(Encyclopedia)Bradford, city and metropolitan borough, N central England, on a small tributary of the Aire River. It is a center of the worsted industry, which dates ...

breakwater

(Encyclopedia)breakwater, offshore structure to protect a harbor from wave energy or deflect currents. When it also serves as a pier, it is called a quay; when covered by a roadway it is called a mole. In the Unite...

Breshkovsky, Catherine

(Encyclopedia)Breshkovsky, Catherine brĕshkôfˈskē [key], 1844–1934, Russian revolutionary, called “the little grandmother (babushka) of the Russian Revolution.” Of a noble family, she began on her father'...

Bedford, cities, United States

(Encyclopedia)Bedford. 1 City (2020 pop. 13,068), seat of Lawrence co., S Ind.; inc. 1889. Bedford limestone, quarried there and shipped all over the world, was ...

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; ...

Lilburne, John

(Encyclopedia)Lilburne, John, 1614?–1657, English political leader and pamphleteer of the Levelers. He was tried before the court of the Star Chamber as early as 1638 for printing and distributing antiepiscopal w...

ionosphere

(Encyclopedia)ionosphere īŏnˈəsfēr [key], series of concentric ionized layers forming part of the upper atmosphere of the earth from around 30 to 50 mi (50 to 80 km) to 250 to 370 mi (400 to 600 km) where it m...

Marcus Aurelius

(Encyclopedia)Marcus Aurelius (Marcus Aelius Aurelius Antoninus) märˈkəs ôrēˈlēəs [key], 121–180, Roman emperor, named originally Marcus Annius Verus. He was a nephew of Faustina, the wife of Antoninus Pi...

Hampden, John

(Encyclopedia)Hampden, John hămpˈdən, hămˈ– [key], 1594–1643, English parliamentary leader; cousin of Oliver Cromwell. He entered Parliament in 1621, became closely associated with Sir John Eliot, and was ...

rock carvings and paintings

(Encyclopedia)rock carvings and paintings, designs inscribed on rock surfaces and huge stone monuments in many parts of the world by prehistoric or preindustrial peoples. They have been found on every continent and...
 

Browse by Subject