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instrument-landing system

(Encyclopedia)CE5 Instrument-landing system (ILS), the most common instrument-landing approach system, uses two beams to guide an airplane. instrument-landing system (ILS), ground-based radio system designed to...

goosefoot

(Encyclopedia)CE5 Lamb's-quarters Chenopodium album, a member of the goosefoot family goosefoot, common name for the genus Chenopodium, as well as for the goosefoot family, Chenopodiaceae, a family of widely di...

Oaxaca, city, Mexico

(Encyclopedia)Oaxaca, city (1990 pop. 212,818), capital of Oaxaca state, S Mexico. The city is officially called Oaxaca de Juárez. Situated in a valley encircled by low mountains, Oaxaca is a commercial and touris...

Mason, Lowell

(Encyclopedia)Mason, Lowell, 1792–1872, American composer and music educator, b. Medfield, Mass. While working as a bank clerk in Savannah, Ga., he helped compile an anthology that was published as The Boston Han...

marsh antelope

(Encyclopedia)marsh antelope, name for members of a group of deerlike African antelopes, usually found in reeds or tall grasses near water. The males of this group have horns that curve back, up, and forward; femal...

Liguria

(Encyclopedia)Liguria lĭgo͝orˈēə, Ital. lēgo͞oˈryä [key], region (1991 pop. 1,676,282), 2,098 sq mi (5,434 sq km), NW Italy, extending along the Ligurian Sea and bordering France on the west. The generally...

Knoxville

(Encyclopedia)Knoxville, city (1990 pop. 165,121), seat of Knox co., E Tenn., on the Tennessee River; inc. 1876. A port of entry, it is a trade and shipping center for a farm, bituminous-coal, and marble area. Its ...

catastrophism

(Encyclopedia)catastrophism kətăsˈtrəfĭzəm [key], in geology, the doctrine that at intervals in the earth's history all living things have been destroyed by cataclysms (e.g., floods or earthquakes) and replac...

Tamaulipas

(Encyclopedia)Tamaulipas tämoulēˈpäs [key], state (1990 pop. 2,249,581), 30,734 sq mi (79,601 sq km), NE Mexico, on the Gulf of Mexico. Ciudad Victoria is the capital. The central and western parts of the state...

Alps

(Encyclopedia)Alps, great mountain system of S central Europe, c.500 mi (800 km) long and c.100 mi (160 km) wide, curving in a great arc from the Riviera coast on the Mediterranean Sea, along the borders of N Italy...