Columbia Encyclopedia

(Encyclopedia) pus, thick white or yellowish fluid that forms in areas of infection such as wounds and abscesses. It is constituted of decomposed body tissue, bacteria (or other micro-organisms that cause the infect...

(Encyclopedia) President's Park, c.82 acres (33 hectares), Washington, D.C. A unit of the National Park system, it includes the White House, the official residence of the president of the United States; Lafayette Sq...

(Encyclopedia) ermine, name for a number of northern species of weasel having white coats in winter, and highly prized for their white fur. It most commonly refers to the white phase of Mustela erminea, called short...

(Encyclopedia) Mead, William Rutherford, 1846–1928, American architect, b. Brattleboro, Vt. He entered the office of Russell Sturgis in New York City. In 1872 he began to practice architecture with C. F. McKim, an...

(Encyclopedia) ruthenium ro͞othēˈnēəm [key], metallic chemical element; symbol Ru; at. no. 44; at. wt. 101.07; m.p. about 2,310℃; b.p. about 3,900℃; sp. gr. 12.41 at 20℃; valence commonly +2, +3, +4, +6, ...

(Encyclopedia) Eocene epoch ēˈəsēnˌ [key], second epoch of the Tertiary period in the Cenozoic era of geologic time, from approximately 54.9 to 38 million years ago. The Eocene in North America was marked by th...

(Encyclopedia) Vyg vĭg [key], Finn. Uikujärvi, Rus. Vygozero, lake, c.300 sq mi (780 sq km), NW European Russia, in Karelia, between Lake Onega and the White Sea. It is fed by the Vyg River, which also drains it i...

(Encyclopedia) Pierrot pēˌərōˈ [key] [Fr.,=little Peter], character in French pantomime. A buffoon, he wore a loose white tunic with big buttons, balloon sleeves, and white pantaloons. His face was painted whit...

(Encyclopedia) Rutherford, Mark, pseud. of William Hale White. ...

(Encyclopedia) blood count, method for determining the number of red (erythrocytes) and white (leukocytes) blood cells in a certain volume of blood. This test can be used as a preliminary step in diagnosing some dis...