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mountain men

(Encyclopedia)mountain men, fur trappers and traders in the Rocky Mts. during the 1820s and 30s. Their activities opened that region of the United States to general knowledge. Since the days of French domination th...

common law

(Encyclopedia)common law, system of law that prevails in England and in countries colonized by England. The name is derived from the medieval theory that the law administered by the king's courts represented the co...

Abu Ghraib

(Encyclopedia)Abu Ghraib or Abu Ghurayb äˈbo͞o grĕb [key], infamous prison located in the town of Abu Ghraib, c.20 mi (32 km) W of Baghdad, Iraq. Built by British contractors in the 1960s, it occupies c.280 acr...

chemical bond

(Encyclopedia)chemical bond, mechanism whereby atoms combine to form molecules. There is a chemical bond between two atoms or groups of atoms when the forces acting between them are strong enough to lead to the for...

Freud, Sigmund

(Encyclopedia)Freud, Sigmund froid [key], 1856–1939, Austrian psychiatrist, founder of psychoanalysis. Born in Moravia, he lived most of his life in Vienna, receiving his medical degree from the Univ. of Vienna i...

ammonia

(Encyclopedia)ammonia, chemical compound, NH3, colorless gas that is about one half as dense as air at ordinary temperatures and pressures. It has a characteristic pungent, penetrating odor. Ammonia forms a minute ...

Dreyfus Affair

(Encyclopedia)Dreyfus Affair drāˈfəs, drī– [key], the controversy that occurred with the treason conviction (1894) of Capt. Alfred Dreyfus (1859–1935), a French artillery officer and graduate of the French ...

South African literature

(Encyclopedia)South African literature, literary works written in South Africa or written by South Africans living in other countries. Populated by diverse ethnic and language groups, South Africa has a distinctive...

poet laureate

(Encyclopedia)poet laureate lôˈrēĭt [key], title conferred in Britain by the monarch on a poet whose duty it is to write commemorative odes and verse. It is an outgrowth of the medieval English custom of having...

mining

(Encyclopedia)mining, extraction of solid mineral resources from the earth. These resources include ores, which contain commercially valuable amounts of metals, such as iron and aluminum; precious stones, such as d...