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boring mill

(Encyclopedia) boring mill, machine tool used to increase the size of a hole previously made in a workpiece, usually with the purpose of obtaining a required degree of finish and accuracy in the…

Cerro Azul

(Encyclopedia) Cerro Azul, volcano, 12,428 ft (3,788 m) high, central Chile, in the Andes c.150 mi (240 km) S of Santiago. Also known as Quizapú after the large vent on the northern flank of the…

Ngami, Lake

(Encyclopedia) Ngami, LakeNgami, Lakeəng-gäˈmē, ng– [key], reedy marsh, c.40 mi (64 km) long and from 4 to 8 mi (6.4–12.9 km) wide, NW Botswana. During the Pleistocene epoch, the lake covered an…

iceboating

(Encyclopedia) iceboating, sport of sailing a specially prepared boat equipped with runners over ice. The first iceboats were probably sailed by the Dutch during the 18th cent., although the Finns…

anteater

(Encyclopedia) anteater, name applied to various animals that feed on ants, termites, and other insects, but more properly restricted to a completely toothless group of the order Edentata. There are…

flügelhorn

(Encyclopedia) flügelhornflügelhornflüˈgəlhôrnˌ [key], three-valved brass instrument similar in size and shape to the trumpet but having a conical rather than a cylindrical bore and possessing a…

Vacaville

(Encyclopedia) VacavilleVacavillevăkˈəvĭl, väˈ– [key], city (1990 pop. 71,479), Solano co., central Calif. about 30 mi (48 km) from Sacramento, in a farm and orchard area; inc. 1892. Sunflower and…

acre, measure of land area

(Encyclopedia) acre, measure of land area used in the English units of measurement. The acre was originally the area a yoke of oxen could plow in a day and therefore differed in size from one…

dwarf planet

(Encyclopedia) dwarf planet, a nonluminous body of rock or gas that orbits the sun and has a rounded shape due to its gravity. Unlike a planet, a dwarf planet is not capable of clearing its orbit of…