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boiling point

(Encyclopedia) boiling point, temperature at which a substance changes its state from liquid to gas. A stricter definition of boiling point is the temperature at which the liquid and vapor (gas)…

cannibalism

(Encyclopedia) cannibalismcannibalismkănˈĭbəlĭzəm [key] [Span. caníbal, referring to the Carib], eating of human flesh by other humans. The charge of cannibalism is a common insult, and it is likely…

airport

(Encyclopedia) airport or airfield, place for landing and departure of aircraft, usually with facilities for housing and maintaining planes and for receiving and discharging passengers and cargo.…

uncertainty principle

(Encyclopedia) uncertainty principle, physical principle, enunciated by Werner Heisenberg in 1927, that places an absolute, theoretical limit on the combined accuracy of certain pairs of simultaneous…

Yellowstone National Park

(Encyclopedia) Yellowstone National Park, 2,219,791 acres (899,015 hectares), the world's first national park (est. 1872), NW Wyo., extending into Montana and Idaho. It lies mainly on a broad plateau…

well

(Encyclopedia) well, aperture in the earth's surface through which substances in a natural underground reservoir, such as water, gas, oil, salt, and sulfur, can flow or be pumped to the surface. In…

Vancouver Island

(Encyclopedia) Vancouver Island (1991 pop. 579,921), 12,408 sq mi (32,137 sq km), SW British Columbia, Canada, in the Pacific Ocean; largest island off W North America. It is c.285 mi (460 km) long…

warbler

(Encyclopedia) warbler, name applied in the New World to members of the wood warbler family (Parulidae) and in the Old World to a large family (Sylviidae) of small, drab, active songsters, including…

marketing

(Encyclopedia) marketing, in economics, that part of the process of production and exchange that is concerned with the flow of goods and services from producer to consumer. In popular usage it is…

canal

(Encyclopedia) canal, an artificial waterway constructed for navigation or for the movement of water. The digging of canals for irrigation probably dates back to the beginnings of agriculture, and…