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Otto, Nikolaus August

(Encyclopedia)Otto, Nikolaus August nēˈkōlous ouˈgo͝ost ôˈtō [key], 1832–91, German engineer. He was coinventor (1867) of an internal-combustion engine, and he devised (1876) the four-stroke Otto cycle, w...

Dix, Otto

(Encyclopedia)Dix, Otto, 1891–1969, German painter and draftsman. Dix fought in World War I and returned to Düsseldorf haunted by the horrors he had witnessed. In 1924 he published War, a series of 50 etchings, ...

Otto, Austrian archduke

(Encyclopedia)Otto: see Hapsburg, Otto von.

Wallach, Otto

(Encyclopedia)Wallach, Otto, 1847–1931, German chemist, Ph.D. Univ. of Göttingen, 1869. Wallach was a professor at the Univ. of Bonn from 1870 to 1889 and at the Univ. of Göttingen from 1889 to 1915. In 1910 he...

Runge, Philipp Otto

(Encyclopedia)Runge, Philipp Otto fēˈlĭp ôtˈō ro͝ongˈə [key], 1777–1810, German painter. Immersed in the mysticism of the romantic movement in Germany, Runge became a central figure of romantic painting....

Warburg, Otto Heinrich

(Encyclopedia)Warburg, Otto Heinrich ŏtˈō hīnˈrĭkh värˈbo͝orkh [key], 1883–1970, German physiologist. He was director (1931–53) of the Kaiser Wilhelm Institute (now Max Planck Institute) for cell physi...

Krag, Jens Otto

(Encyclopedia)Krag, Jens Otto yĕns ôˈtō kräkh [key], 1914–78, Danish political leader. A Social Democrat, he entered parliament in 1947 and played a leading role in shaping Denmark's postwar economic policie...

Otto of Freising

(Encyclopedia)Otto of Freising frīˈzĭng [key], b. after 1111, d. 1158, German chronicler, bishop of Freising. He was a son of Leopold III of Austria, a half-brother of Emperor Conrad III, and an uncle of Emperor...

Kotzebue, Otto von

(Encyclopedia)Kotzebue, Otto von ôˈtō vônˈ kôtˈzəbo͞o [key], 1787–1846, Russian naval officer and explorer; son of A. F. F. von Kotzebue. He accompanied A. J. von Krusenstern on his circumnavigation (180...

Guericke, Otto von

(Encyclopedia)Guericke, Otto von ôˈtō fən gāˈrĭkə [key], 1602–86, German physicist, noted for his study of pneumatics. He carried out his most important researches while burgomaster (1646–81) of Magdebu...