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Procopius the Great

(Encyclopedia)Procopius the Great, Czech Prokop Holý, d. 1434, Czech Hussite leader. A priest, he joined the Hussite movement (see Hussites) and distinguished himself as a captain under John Zizka in the Hussite W...

ruthenium

(Encyclopedia)ruthenium ro͞othēˈnēəm [key], metallic chemical element; symbol Ru; at. no. 44; at. wt. 101.07; m.p. about 2,310℃; b.p. about 3,900℃; sp. gr. 12.41 at 20℃; valence commonly +2, +3, +4, +6, ...

Acton, John Emerich Edward Dalberg Acton, 1st Baron

(Encyclopedia)Acton, John Emerich Edward Dalberg Acton, 1st Baron, 1834–1902, English historian, b. Naples; grandson of Sir John Francis Edward Acton and of Emmerich Joseph, duc de Dalberg. Denied entrance into C...

tuatara

(Encyclopedia)tuatara –tāˈrə [key], lizardlike reptile, Sphenodon punctatus, last survivor of the reptilian order Rhynchocephalia, which flourished in the early Mesozoic era before the rise of the dinosaurs. A...

Panama Papers

(Encyclopedia)Panama Papers, popular name for the some 11.5 million internal documents belonging to the Panamanian-based law firm Mossack Fonseca that revealed information about secret offshore companies and bank a...

Williams, William Carlos

(Encyclopedia)Williams, William Carlos, 1883–1963, American poet and physician, b. Rutherford, N.J., educated in Geneva, Switzerland, Univ. of Pennsylvania (M.D., 1906), and Univ. of Leipzig, where he studied ped...

Work Projects Administration

(Encyclopedia)Work Projects Administration (WPA), former U.S. government agency, established in 1935 by executive order of President Franklin Delano Roosevelt as the Works Progress Administration; it was renamed th...

solid

(Encyclopedia)solid, one of the three commonly recognized states in which matter occurs, i.e., that state, as distinguished from liquid and gas, in which a substance has both a definite shape and a definite volume....

Zsigmond, Vilmos

(Encyclopedia)Zsigmond, Vilmos, 1930–2016, Hungarian-American cinematographer. As a film student in Budapest, he and fellow student (and later cinematographer) Laszlo Kovacs secretly filmed the street fighting as...

Zuccaro

(Encyclopedia)Zuccaro tso͞okˈkārō [key], Italian painters, two brothers, who were leading exponents of the late mannerist style in Rome. Taddeo Zuccaro, 1529–66, won recognition by his decorative paintings in...