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landslide

(Encyclopedia) landslide, rapid slipping of a mass of earth or rock from a higher elevation to a lower level under the influence of gravity and water lubrication. More specifically, rockslides are…

Gray, Thomas

(Encyclopedia) Gray, Thomas, 1716–71, English poet. He was educated at Eton and Peterhouse, Cambridge. In 1739 he began a grand tour of the Continent with Horace Walpole. They quarreled in Italy, and…

group

(Encyclopedia) group, in mathematics, system consisting of a set of elements and a binary operation a∘b defined for combining two elements such that the following requirements are satisfied: (1) The…

Hogarth, William

(Encyclopedia) Hogarth, William, 1697–1764, English painter, satirist, engraver, and art theorist, b. London. At the age of 15 he was apprenticed to a silver-plate engraver. He soon made engravings…

hysteria

(Encyclopedia) hysteriahysteriahĭstĕrˈēə [key], in psychology, a disorder commonly known today as conversion disorder, in which a psychological conflict is converted into a bodily disturbance. It is…

homicide

(Encyclopedia) homicidehomicidehŏmˈəsīd [key], in law, the taking of human life. Homicides that are neither justifiable nor excusable are considered crimes. A criminal homicide committed with malice…

inclined plane

(Encyclopedia) CE5 Inclined plane inclined plane, simple machine, consisting of a sloping surface, whose purpose is to reduce the force that must be applied to raise a load. To raise a body…

Artaxerxes II

(Encyclopedia) Artaxerxes II, d. 358 b.c., king of ancient Persia (404–358 b.c.), son and successor of Darius II. He is sometimes called in Greek Artaxerxes Mnemon [the thoughtful]. Early in his…

Nichols, Mike

(Encyclopedia) Nichols, Mike, 1931–2014, American actor and director, b. Berlin, Germany, as Mikhail Igor Peschkowsky. His family immigrated to the…

Mountain Meadows

(Encyclopedia) Mountain Meadows, small valley in extreme SW Utah, where in 1857 a party of some 140 emigrants bound for California were massacred. It was a period when friction between Mormons and…