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Alexander I, czar of Russia

(Encyclopedia)Alexander I, 1777–1825, czar of Russia (1801–25), son of Paul I (in whose murder he may have taken an indirect part). In the first years of his reign the liberalism of his Swiss tutor, Frédéric ...

Steno, Nicolaus

(Encyclopedia)Steno, Nicolaus nēls stānˈsən [key], 1638–86, Danish anatomist, geologist, and Roman Catholic prelate. He lived principally in Copenhagen, Paris, and Florence. He investigated the heart, brain, ...

Triceratops

(Encyclopedia)Triceratops trīsĕrˈətŏps [key] [Gr., = three-horn face], genus of ornithischian quadruped dinosaurs of the late Cretaceous period. Because of some variations in sample fossils, it was thought...

amber

(Encyclopedia)amber, fossilized tree resin. Amber can vary in color from yellow to red to green and blue. The best commercial amber is transparent, but some varieties are cloudy. To be called amber, the resin must ...

United Mine Workers of America

(Encyclopedia)United Mine Workers of America (UMW), international labor union formed (1890) by the amalgamation of the National Progressive Union (organized 1888) and the mine locals under the Knights of Labor. It ...

Philip V, king of Spain

(Encyclopedia)Philip V, 1683–1746, king of Spain (1700–1746), first Bourbon on the Spanish throne. A grandson of Louis XIV of France, he was titular duke of Anjou before Charles II of Spain designated him as hi...

Weidenreich, Franz

(Encyclopedia)Weidenreich, Franz vīˈdĕnrīkh [key], 1873–1948, German anatomist and physical anthropologist. He was educated at the universities of Munich, Kiel, Berlin, and Strasbourg. In 1921 he became profe...

Brongniart, Alexandre

(Encyclopedia)Brongniart, Alexandre brôNyärˈ [key], 1770–1847, French geologist, mineralogist, and chemist. As director of the Sèvres porcelain factory from 1800, he was responsible for its international fam...

Iguanodon

(Encyclopedia)Iguanodon ĭgwănˈədŏn [key] [Gr., = iguana tooth], herbivorous ornithiscian dinosaur, characterized by teeth similar to those of the iguana, a horny beak, spikelike thumbs, and a powerful tail...

phalanx

(Encyclopedia)phalanx, ancient Greek formation of infantry. The soldiers were arrayed in rows (8 or 16), with arms at the ready, making a solid block that could sweep bristling through the more dispersed ranks of t...