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physiocrats

(Encyclopedia) physiocratsphysiocratsfĭzˈēəkrătsˌ [key], school of French thinkers in the 18th cent. who evolved the first complete system of economics. They were also referred to simply as “the…

Ptolemaic system

(Encyclopedia) Ptolemaic systemPtolemaic systemtŏlˌəmāˈĭk [key], historically the most influential of the geocentric cosmological theories, i.e., theories that placed the earth motionless at the…

oxidation and reduction

(Encyclopedia) oxidation and reduction, complementary chemical reactions characterized by the loss or gain, respectively, of one or more electrons by an atom or molecule. Originally the term…

Frémont, John Charles

(Encyclopedia) Frémont, John Charles, 1813–90, American explorer, soldier, and political leader, b. Savannah, Ga. He taught mathematics to U.S. naval cadets, then became an assistant on a surveying…

analytic geometry

(Encyclopedia) analytic geometry, branch of geometry in which points are represented with respect to a coordinate system, such as Cartesian coordinates, and in which the approach to geometric…

campaign, political

(Encyclopedia) campaign, political, organized effort to secure nomination and election of candidates for government offices. In the United States, the most important political campaigns are those for…

Theresa, Saint (Theresa of Ávila)

(Encyclopedia) Theresa or Teresa, Saint (Theresa of Ávila)Theresa or Teresa, Saintboth: tĭrēˈsə, –zə [key], 1515–82, Spanish Carmelite nun, Doctor of the Church, one of the principal saints of the…

metal

(Encyclopedia) metal, chemical element displaying certain properties by which it is normally distinguished from a nonmetal, notably its metallic luster, the capacity to lose electrons and form a…

Pan-Americanism

(Encyclopedia) Pan-Americanism, movement toward commercial, social, economic, military, and political cooperation among the nations of North, Central, and South America. In the early 20th cent., U.…

Indian Mutiny

(Encyclopedia) Indian Mutiny, 1857–58, revolt that began with Indian soldiers in the Bengal army of the British East India Company but developed into a widespread uprising against British rule in…