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Youngstown

(Encyclopedia) Youngstown, city (1990 pop. 95,732), seat of Mahoning co., NE Ohio, near the Pa. line; founded 1797, inc. 1849. It was formerly a major U.S. iron and steel center. In the 1970s many of…

Boulder City

(Encyclopedia) Boulder City, residential city (2020 pop. 16,701), S Nev., just W of Hoover Dam near Lake Mead; inc. 1959. Built (1932) by the federal…

Crédit Mobilier of America

(Encyclopedia) Crédit Mobilier of AmericaCrédit Mobilier of Americakrĕˈdĭt mōbĭlyāˈ, krādēˈ [key], ephemeral construction company, connected with the building of the Union Pacific RR and involved in…

Panama Canal

(Encyclopedia) Panama Canal, waterway across the Isthmus of Panama, connecting the Atlantic (by way of the Caribbean Sea) and Pacific oceans, built by the United States (1904–14, on territory leased…

miniature painting

(Encyclopedia) miniature painting [Ital.,=artwork, especially manuscript initial letters, done with the red lead pigment minium; the word originally had no implication as to size]. In a general sense…

kinetic-molecular theory of gases

(Encyclopedia) kinetic-molecular theory of gases, physical theory that explains the behavior of gases on the basis of the following assumptions: (1) Any gas is composed of a very large number of very…

Leif Ericsson

(Encyclopedia) Leif EricssonLeif Ericssonlēf ĕrˈĭksən [key], Old Norse Leifr Eiriksson, fl. a.d. 999–1000, Norse discoverer of America, b. probably in Iceland; son of Eric the Red. He spent his youth…

Leakey, Mary Douglas

(Encyclopedia) Leakey, Mary Douglas, 1913–96, British archaeologist, b. London as Mary Douglas Nicol; wife of Louis Leakey and mother of Richard Leakey. She had little formal education, but a…

hajj

(Encyclopedia) hajjhajjhäj [key], the pilgrimage to Mecca, Saudi Arabia, one of the five basic requirements (arkan or “pillars”) of Islam. Its annual observance corresponds to the major holy day id…

Bloomsbury group

(Encyclopedia) Bloomsbury group, name given to the literary group that made the Bloomsbury area of London the center of its activities from 1904 to World War II. It included Lytton Strachey, Virginia…