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Etna

(Encyclopedia) Etna or AetnaEtnaboth: ĕtˈnə [key], volcano, 10,958 ft (3,340 m) high, on the east coast of Sicily, S Italy. One of the most active volcanoes in the world, it also is the highest…

eukaryote

(Encyclopedia) eukaryoteeukaryotey&oomacr;kârˈē-ōtˌ [key], a cell or organism composed of cells that have a membrane-bound nucleus and organelles (mitochondria, chloroplasts; see cell, in biology…

elevator, in machinery

(Encyclopedia) elevator, in machinery, device for transporting people or goods from one level to another. The term is applied to the enclosed structures as well as the open platforms used to provide…

fluoridation

(Encyclopedia) fluoridationfluoridationfl&oobreve;rˌĭdāˈshən [key], process of adding a fluoride to the water supply of a community to preserve the teeth of the inhabitants. Tooth enamel…

Faiyum, El

(Encyclopedia) Faiyum, ElFaiyum, Elĕl fīy&oomacr;mˈ [key], or Al FayyumAl Fayyumäl [key]Al Fayyum– [key]Al Fayyum fīy&oomacr;mˈ [key], region, coextensive with El Faiyum governorate, N Egypt…

Bengaluru

(Encyclopedia) Bengaluru Bengaluru bĕng-gäˌl&oomacr;r&oomacr;ˈ [key], formerly Bangalore…

Titicaca

(Encyclopedia) TiticacaTiticacatētēkäˈkä [key], lake, c.3,200 sq mi (8,290 sq km), 110 mi (177 km) long, and c.900 ft (270 m) deep at at its deepest point, in the Andes Mts., on the Bolivia-Peru…

Zeeland

(Encyclopedia) ZeelandZeelandzēˈlənd, Dutch zāˈlänt [key], province (1994 pop. 363,900), c.650 sq mi (1,680 sq km), SW Netherlands, bordering on Belgium in the south and the North Sea in the west.…

pollution allowance

(Encyclopedia) pollution allowance or emission rights, government-issued permit to emit a certain amount of a pollutant. The holder of the permit may use it to pollute legally, may trade permits, or…

pontoon

(Encyclopedia) pontoon, one of a number of floats used chiefly to support a bridge, to raise a sunken ship, or to float a hydroplane or a floating dock. Pontoons have been built of wood, of hides…