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rain tree

(Encyclopedia)rain tree, also called monkeypod, a large leguminous tropical tree (Albizia saman or Samanea saman) of tropical America belonging to the family Leguminosae (pulse family), the leaves of which fold tog...

Owain Gwynedd

(Encyclopedia)Owain Gwynedd ōˈwīn gwĭnˈĕᵺ [key], d. 1170, prince of North Wales (1137–70). During the troubled reign of King Stephen of England, Owain and other Welsh princes were able to reoccupy much te...

air traffic control

(Encyclopedia)air traffic control, the system by which airplanes are safely routed into and out of major airports. Air traffic control in the United States is centered in a number of regional control centers that r...

Frankland, William

(Encyclopedia)Frankland, William (Alfred William Frankland), 1912–2020, British allergist and immunologist. He studied medicine at Queens College, Oxford, and St. Mary's Hospital Medical School (now part of Imper...

Eliasson, Olafur

(Encyclopedia)Eliasson, Olafur, 1967–, Danish sculptor, architect, and installation artist. His work is influenced by nature and natural phenomena. Early works involved frozen water droplets, electric fans, and s...

Australian terrier

(Encyclopedia)Australian terrier, breed of small, hardy terrier perfected in Australia c.1885. It stands about 10 in. (25.4 cm) high at the shoulder and weighs from 12 to 14 lb (5.5–6.4 kg). Its weather-resistant...

weathering

(Encyclopedia)weathering, collective term for the processes by which rock at or near the earth's surface is disintegrated and decomposed by the action of atmospheric agents, water, and living things. Some of these ...

border terrier

(Encyclopedia)border terrier, breed of hardy, medium-sized terrier developed in the Border districts of N England in the 18th and 19th cent. It stands about 12 in. (30 cm) high at the shoulder and weighs from 131�...

Sable Island, Nova Scotia, Canada

(Encyclopedia)Sable Island, low, sandy island, c.25 mi (40 km) long and 1 mi (1.6 km) wide, off N.S., Canada, ESE of Halifax, near the edge of the continental shelf. The crescent-shaped island is the exposed part o...

Samoyed

(Encyclopedia)Samoyed sămˈəyĕd [key], breed of hardy, muscular working dog developed in N Siberia many centuries ago. It stands from 19 to 23.5 in. (48.3–59.7 cm) high at the shoulder and weighs from 35 to 65...