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dialectic

(Encyclopedia)dialectic dīəlĕkˈtĭk [key] [Gr.,= art of conversation], in philosophy, term originally applied to the method of philosophizing by means of question and answer employed by certain ancient philosop...

Boussingault, Jean Baptiste Joseph Dieudonné

(Encyclopedia)Boussingault, Jean Baptiste Joseph Dieudonné zhäN bätēstˈ zhôzĕfˈ dyödônāˈ bo͞osăNgōˈ [key], 1802–87, French agricultural chemist. He was professor of chemistry at Lyons and later pr...

Union of Soviet Socialist Republics

(Encyclopedia)Union of Soviet Socialist Republics (USSR), Rus. Soyuz Sovetskikh Sotsialisticheskikh Respublik, former republic. It was established in 1922 and dissolved in 1991. The Soviet Union was the first state...

Fort Union National Monument

(Encyclopedia)Fort Union National Monument: see National Parks and Monuments (table)national parks and monuments (table). ...

American Civil Liberties Union

(Encyclopedia)American Civil Liberties Union (ACLU), nonpartisan organization devoted to the preservation and extension of the basic rights set forth in the U.S. Constitution. Founded (1920) by such prominent figur...

Western Union Telegraph Company

(Encyclopedia)Western Union Telegraph Company, enterprise created (1851) to provide telegraphic communications services in the United States. Originally known as the New York and Mississippi Valley Printing Telegra...

Union of South Africa

(Encyclopedia)Union of South Africa: see South Africa. ...

Woman's Christian Temperance Union

(Encyclopedia)Woman's Christian Temperance Union (WCTU), organization that seeks to upgrade moral life, especially through abstinence from alcohol. The National WCTU of the United States was founded (1874) in Cleve...

Court of Justice of the European Union

(Encyclopedia)Court of Justice of the European Union, judicial institution of the European Union (EU). Located in Luxembourg, it was founded in 1958 as the joint court for the three treaty organizations that were c...

dissociation

(Encyclopedia)dissociation, in chemistry, separation of a substance into atoms or ions. Thermal dissociation occurs at high temperatures. For example, hydrogen molecules (H2) dissociate into atoms (H) at very high ...