Columbia Encyclopedia

Search results

485 results found

alcoholism

(Encyclopedia)alcoholism, 04/00 disease characterized by impaired control over the consumption of alcoholic beverages. Alcoholism is a serious problem worldwide; in the United States the wide availability of alcoho...

wagon train

(Encyclopedia)wagon train, in U.S. history, a group of covered wagons used to convey people and supplies to the West before the coming of the railroad. The wagon replaced the pack, or horse, train in land commerce ...

Braddock, Edward

(Encyclopedia)Braddock, Edward, 1695–1755, British general in the French and Indian War (see under French and Indian Wars). Although he had seen little active campaigning before 1754, Braddock was reputed to have...

Rh factor

(Encyclopedia)Rh factor, protein substance present in the red blood cells of most people, capable of inducing intense antigenic reactions. The Rh, or rhesus, factor was discovered in 1940 by K. Landsteiner and A. S...

ozone

(Encyclopedia)ozone ōˈzōn [key], an allotropic form of the chemical element oxygen (see allotropy). Pure ozone is an unstable, faintly bluish gas with a characteristic fresh, penetrating odor. The gas has a dens...

Stuart, James Ewell Brown

(Encyclopedia)Stuart, James Ewell Brown (Jeb Stuart), 1833–64, Confederate cavalry commander in the American Civil War, b. Patrick co., Va. Most of his U.S. army service was with the 1st Cavalry in Kansas. On Vir...

Mainz

(Encyclopedia)Mainz mīnts [key], city (1994 pop. 185,487), capital of Rhineland-Palatinate, W Germany, a port on the E bank of the Rhine River opposite the mouth of the Main River. Its French name, also sometimes ...

Henry VII, Holy Roman emperor and German king

(Encyclopedia)Henry VII, c.1275–1313, Holy Roman emperor (1312–13) and German king (1308–13). A minor count of the house of Luxembourg, Henry was elected German king on the death of King Albert I after the el...

Golden Horde, Empire of the

(Encyclopedia)CE5 Khanate of the Golden Horde (c.1300) Golden Horde, Empire of the, Mongol state comprising most of Russia, given as an appanage to Jenghiz Khan's oldest son, Juchi, and actually conquered and f...

Senghor, Léopold Sédar

(Encyclopedia)Senghor, Léopold Sédar lāôpôldˈ sādärˈ säNgôrˈ [key], 1906–2001, African statesman and poet; president (1960–80) of the Republic of Senegal, b. Joal. The son of a prosperous landowner,...