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(Encyclopedia)CE5 Mauritius môrĭshˈēəs, –əs [key], officially Republic of Mauritius, republic (2015 est. pop. 1,259,000), 790 sq mi (2,046 sq km), in the SW Indian Ocean. It is part of the Mascarene Isla...

Greeley, Horace

(Encyclopedia)Greeley, Horace, 1811–72, American newspaper editor, founder of the New York Tribune, b. Amherst, N.H. Greeley supported Ulysses S. Grant during the first years of his administration but came to r...

radio astronomy

(Encyclopedia)radio astronomy, study of celestial bodies by means of the electromagnetic radio frequency waves they emit and absorb naturally. Radio waves also come from outside the Milky Way. These extragalact...

Lenin, Vladimir Ilyich

(Encyclopedia)Lenin, Vladimir Ilyich lĕnˈĭn, Rus. vlədyēˈmĭr ĭlyēchˈ lyĕˈnĭn [key], 1870–1924, Russian revolutionary, the founder of Bolshevism and the major force behind the Revolution of Oct., 1917...

manorial system

(Encyclopedia)manorial system sēnyôrˈēəl [key], economic and social system of medieval Europe under which peasants' land tenure and production were regulated, and local justice and taxation were administered. ...

embryo

(Encyclopedia)CE5 Development of the human embryo embryo ĕmˈbrēō [key], name for the developing young of an animal or plant. In its widest definition, the embryo is the young from the moment of fertilizatio...

Utopia

(Encyclopedia)Utopia yo͞otōˈpēə [key] [Gr.,=no place], title of a book by Sir Thomas More, published in Latin in 1516. The work pictures an ideal state where all is ordered for the best for humanity as a whole...

black hole

(Encyclopedia)black hole, in astronomy, celestial object of such extremely intense gravity that it attracts everything near it and in some instances prevents everything, including light, from escaping. The term was...

Prussia

(Encyclopedia)Prussia prŭshˈə [key], Ger. Preussen, former state, the largest and most important of the German states. Berlin was the capital. The chief member of the German Empire (1871–1918) and a state of t...