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swim bladder

(Encyclopedia)swim bladder, large, thin-walled sac in some fishes that may function in several ways, e.g., as a buoyant float, a sound producer and receptor, and a respiratory organ. The swim bladder, or air bladde...

tenor

(Encyclopedia)tenor, highest natural male voice. In medieval polyphony, tenor was the name given to the voice that had the cantus firmus, a preexisting melody, often a fragment of plainsong, to which other voices i...

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...

Shire horse

(Encyclopedia)Shire horse, a breed of draft horse native to central England. It is equal in weight to the Belgian horse and is usually slightly taller. Widely used as a war horse during the Middle Ages, it was well...

Casimir IV

(Encyclopedia)Casimir IV, 1427–92, king of Poland (1447–92). He became (1440) ruler of Lithuania and in 1447 succeeded his brother Ladislaus III as king of Poland. He united the two nations more closely by plac...

pyramid, in geometry

(Encyclopedia)CE5 Pyramid pyramid, in geometry, solid figure bounded by a polygon (the base, or directrix) and the surface generated by a moving line (the generator) passing through a fixed point (vertex) and c...

Ramey, Samuel

(Encyclopedia)Ramey, Samuel, 1942–, American operatic bass, b. Colby, Kans. He studied music at Kansas State and Wichita State (grad. 1968) universities and debuted with the New York City Opera in Bizet's Carmen ...

Dartmoor Prison

(Encyclopedia)Dartmoor Prison, English prison, at Princetown, Devonshire, built (1806–9) to house French captives during the Napoleonic Wars. During the War of 1812 many American prisoners were confined there, an...

Coudert, Frederic René

(Encyclopedia)Coudert, Frederic René ko͞odârˈ [key], 1832–1903, American lawyer and public official, b. New York City. He practiced law in New York City and for many years was counsel in the United States for...

Davies, Joseph Edward

(Encyclopedia)Davies, Joseph Edward dāˈvēz [key], 1876–1958, American diplomat, b. Watertown, Wis. Admitted to the bar in 1901, he was commissioner of corporations (1913–15) and chairman (1915–16) of the F...