Columbia Encyclopedia

(Encyclopedia) artery, blood vessel that conveys blood away from the heart. Except for the pulmonary artery, which carries deoxygenated blood from the heart to the lungs, arteries carry oxygenated blood from the hea...

(Encyclopedia) O'Keeffe, Georgia ōkēfˈ [key], 1887–1986, American painter, b. Sun Prairie, Wis. After working briefly as a commercial artist in Chicago, O'Keeffe abandoned painting until she began the study of ...

(Encyclopedia) African swine fever (ASF), highly contagious, deadly viral disease of swine. Its acute form, which is typically fatal, is characterized by high fever, loss of appetite, lethargy, and redness in the sk...

(Encyclopedia) black fly, name for any of the flies of the family Simuliidae. The black fly is about 1⁄8 in. (3.2 mm) long and has large eyes, short legs, a stout, humped back, broad gauzy wings, and piercing-suck...

(Encyclopedia) adsorption, adhesion of the molecules of liquids, gases, and dissolved substances to the surfaces of solids, as opposed to absorption, in which the molecules actually enter the absorbing medium (see a...

(Encyclopedia) horsefly, common name for the large hairy flies of the family Tabanidae. Male horseflies feed on pollen and nectar, but the females suck blood as well and are common pests of animals and sometimes of ...

(Encyclopedia) Fisher, John (Saint John Fisher), c.1469–1535, English prelate, cardinal, bishop of Rochester (1504–34). Known for his scholarship at Cambridge, he was chosen confessor to Margaret Beaufort, mothe...

(Encyclopedia) Kornilov, Lavr Georgyevich läˈvər gēyôrˈgyĭvĭch kərnyēˈləf [key], 1870–1918, Russian general, anti-Bolshevik commander during the civil war (1918–20). He fought in the Russo-Japanese W...

(Encyclopedia) vendetta vĕndĕtˈə [key] [Ital.,=vengeance], feud between members of two kinship groups to avenge a wrong done to a relative. Although the term originated in Corsica, the custom has also been pract...

(Encyclopedia) rubella or German measles, acute infectious disease of children and young adults. It is caused by a filterable virus that is spread by droplet spray from the respiratory tract of an infected individua...