Columbia Encyclopedia

Search results

500 results found

Tanzimat

(Encyclopedia)Tanzimat tänˈzēmät [key], [Turk.,=reorganization], the name referring to a period of modernizing reforms instituted under the Ottoman Empire from 1839 to 1876. In 1839, under the rule of Sultan Ab...

surrogate mother

(Encyclopedia)surrogate mother, a woman who agrees, usually by contract and for a fee, to bear a child for a couple who are childless because the wife is infertile or physically incapable of carrying a developing f...

Lenz's law

(Encyclopedia)Lenz's law, physical law, discovered by the German scientist H. F. E. Lenz in 1834, that states that the electromotive force (emf) induced in a conductor moving perpendicular to a magnetic field tends...

creole language

(Encyclopedia)creole language krēōlˈ [key], any language that began as a pidgin but was later adopted as the mother tongue by a people in place of the original mother tongue or tongues. Examples are the Gullah o...

Pisistratus

(Encyclopedia)Pisistratus pīsĭsˈtrətəs [key], 605?–527 b.c., Greek statesman, tyrant of Athens. His power was founded on the cohesion of the rural citizens, whom he consolidated with farseeing land laws. His...

capitularies

(Encyclopedia)capitularies kəpĭchˈo͝olĕrˌēz [key], decrees and written commands of the Carolingian kings of the Franks, so called because they were divided into capitula, or chapters. Both legislative and ad...

solar system

(Encyclopedia)CE5 Solar system CE5 solar system, the sun and the surrounding planets, natural satellites, dwarf planets, asteroids, meteoroids, and comets that are bound by its gravity. The sun is by far the ...

sunspots

(Encyclopedia)sunspots, dark, usually irregularly shaped spots on the sun's surface that are actually solar magnetic storms. The spots are darker because the temperature of the spots is lower than that of the surro...

monopoly

(Encyclopedia)monopoly mənōpˈəlē [key], market condition in which there is only one seller of a certain commodity; by virtue of the long-run control over supply, such a seller is able to exert nearly total con...

peonage

(Encyclopedia)peonage pēˈənĭj [key], system of involuntary servitude based on the indebtedness of the laborer (the peon) to his creditor. It was prevalent in Spanish America, especially in Mexico, Guatemala, Ec...