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sulfuric acid

(Encyclopedia)sulfuric acid, chemical compound, H2SO4, colorless, odorless, extremely corrosive, oily liquid. It is sometimes called oil of vitriol. Although sulfuric acid is now one of the most widely used c...

Weimar

(Encyclopedia)Weimar vīˈmär [key], city (1994 pop. 58,807), E Thuringia, central Germany, on the Ilm River. It is an industrial, transportation, and cultural center. Manufactures include agricultural machinery, ...

breeding

(Encyclopedia)breeding, in agriculture and animal husbandry, propagation of plants and animals by sexual reproduction; usually based on selection of parents with desirable traits to produce improved progeny. In con...

classicism

(Encyclopedia)classicism, a term that, when applied generally, means clearness, elegance, symmetry, and repose produced by attention to traditional forms. It is sometimes synonymous with excellence or artistic qual...

organ

(Encyclopedia)CE5 Organ organ, a musical wind instrument in which sound is produced by one or more sets of pipes controlled by a keyboard, each pipe producing only one pitch by means of a mechanically produced ...

Metternich, Clemens Wenzel Nepomuk Lothar, Fürst von

(Encyclopedia)Metternich, Clemens Wenzel Nepomuk Lothar, Fürst von klāˈmĕns vĕnˈtsəl nāˈpōmo͝ok lōˈtär fürst fən mĕtˈərnĭkh [key], 1773–1859, Austrian statesman and arbiter of post-Napoleonic ...

Marshall Islands

(Encyclopedia)Marshall Islands, officially Republic of the Marshall Islands, independent nation (2015 est. pop. 53,000), in the central Pacific. The Marshalls extend over a 700-mi (1,130-km) area and comprise two m...

progressive education

(Encyclopedia)progressive education, movement in American education. Confined to a period between the late 19th and mid-20th cent., the term “progressive education” is generally used to refer only to those educ...

race

(Encyclopedia)race, one of the group of populations regarded as constituting humanity. The differences that have historically determined the classification into races are predominantly physical aspects of appearanc...

Luther, Martin

(Encyclopedia)Luther, Martin, 1483–1546, German leader of the Protestant Reformation, b. Eisleben, Saxony, of a family of small, but free, landholders. At Wittenberg the iconoclasts under Carlstadt had institut...