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zinc oxide

(Encyclopedia) zinc oxide, chemical compound, ZnO, that is nearly insoluble in water but soluble in acids or alkalies. It occurs as white hexagonal crystals or a white powder commonly known as zinc…

breakwater

(Encyclopedia) breakwater, offshore structure to protect a harbor from wave energy or deflect currents. When it also serves as a pier, it is called a quay; when covered by a roadway it is called a…

Briard

(Encyclopedia) BriardBriardbrēärdˈ [key], breed of muscular, wiry working dog whose origins may be traced back to 12th-century France. It stands from 22 to 27 in. (55.9–68.6 cm) high at the shoulder…

Bismarck

(Encyclopedia) Bismarck, city (2020 pop. 73,622), state capital and seat of Burleigh co., S central N.Dak., on hills overlooking the Missouri River;…

Abbey, Edward Paul

(Encyclopedia) Abbey, Edward Paul, 1927–1989, American writer and environmentalist, b. Indiana, Pa., grad. Univ. of New Mexico (B.A. 1951, M.A. 1956). An ardent, sometimes abrasive advocate for the…

World Meteorological Organization

(Encyclopedia) World Meteorological Organization (WMO), specialized agency of the United Nations; established in 1950 with headquarters at Geneva, it became affiliated with the United Nations a year…

Carvajal, Francisco de

(Encyclopedia) Carvajal, Francisco deCarvajal, Francisco defränthēsˈkō dā kärvähälˈ [key], 1464?–1548, Spanish conquistador. For 40 years he fought in European wars before going to Mexico and…

Laramie

(Encyclopedia) LaramieLaramielârˈəmē [key], city (1990 pop. 26,687), seat of Albany co., SE Wyo., on the Laramie River; inc. 1874. It is a commercial, railroad, and industrial center for a livestock…

Ladd, Edwin Fremont

(Encyclopedia) Ladd, Edwin Fremont, 1859–1925, American chemist and political leader, b. Somerset co., Maine. From 1890 to 1916 he was dean of the school of chemistry and pharmacy at the North Dakota…

defense mechanism

(Encyclopedia) defense mechanism, in psychoanalysis, any of a variety of unconscious personality reactions which the ego uses to protect the conscious mind from threatening feelings and perceptions.…