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Wirt, William Albert

(Encyclopedia)Wirt, William Albert, 1874–1938, American educator, b. Markle, Ind., grad. DePauw Univ. (Ph.B., 1898; Ph.D., 1916). In 1907 he became superintendent of schools in Gary, Ind., where he developed a pl...

Yeosu

(Encyclopedia)Yeosu or Yosu yôˈso͞oˈ [key], city (1995 pop. 183,559), South Jeolla (Cholla) prov., S South Korea, on the Korea Strait. The municipality consists of a peninsula and more than 300 neighboring isla...

Zomba

(Encyclopedia)Zomba zŏmˈbə [key], town (1994 est. pop. 62,700), S Malawi, in the Shire Highlands. Until 1973 it was the national capital. European planters founded the town c.1880. It is the commercial center fo...

Biysk

(Encyclopedia)Biysk bēsk [key], city, S central Siberian Russia, on the Biya River. A port and the terminu...

Vizcaíno, Sebastián

(Encyclopedia)Vizcaíno, Sebastián sāvästyänˈ vēthkäēˈnō [key], c.1550–c.1628, Spanish explorer and merchant. After an unsuccessful attempt to plant a colony in Lower California (1596), he sailed (1602)...

corn borer

(Encyclopedia)corn borer or European corn borer, common name for the larva of a moth of the family Pyralidae, introduced from S Europe into the Boston area in 1917. The corn borer, Ostrinia nubilalis, has steadily ...

defoliant

(Encyclopedia)defoliant, any one of several chemical compounds that, when applied to plants, can alter their metabolism, causing the leaves to drop off. In agriculture defoliants are used to eliminate the leaves of...

eukaryote

(Encyclopedia)eukaryote yo͞okârˈē-ōtˌ [key], a cell or organism composed of cells that have a membrane-bound nucleus and organelles (mitochondria, chloroplasts; see cell, in biology) and genetic material orga...

eutrophication

(Encyclopedia)eutrophication yo͞otrōˌfĭkāˈshən [key], aging of a lake by biological enrichment of its water. In a young lake the water is cold and clear, supporting little life. With time, streams draining i...

Du Pont, Eleuthère Irénée

(Encyclopedia)Du Pont, Eleuthère Irénée do͞o pŏnt, Fr. ālötĕrˈ ērānāˈ dü pôN [key], 1772–1834, American gunpowder manufacturer, b. Paris, France; son of Pierre Samuel du Pont de Nemours. At the age...