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dubnium

(Encyclopedia)dubnium do͞obˈnēəm [key], artificially produced radioactive chemical element; symbol Db; at. no. 105; mass number of most stable isotope 268; m.p., b.p., and sp. gr. unknown; valence +5. Situated ...

Diels, Otto Paul Hermann

(Encyclopedia)Diels, Otto Paul Hermann, 1876–1954, German chemist, Ph.D. Univ. of Berlin, 1899. From 1899 to 1915, Diehls was on the faculty at the Univ. of Berlin. In 1916, he joined the Univ. of Kiel, where he ...

Graham, Otto Everett, Jr.

(Encyclopedia)Graham, Otto Everett, Jr., 1921–2003, American football player and coach, b. Waukegan, Ill. He was an All-American football and basketball player at Northwestern Univ. before he joined the Cleveland...

Nordenskjöld, Nils Otto Gustaf

(Encyclopedia)Nordenskjöld, Nils Otto Gustaf, 1869–1928, Swedish geographer and explorer, nephew of Nils Adolf Erik Nordenskjöld. He headed an expedition to Patagonia (1895–97) and later explored the Klondike...

Liman von Sanders, Otto

(Encyclopedia)Liman von Sanders, Otto ôˈtō lēˈmän fən zänˈdərs [key], 1855–1929, German general. In 1913 he was made head of the German military mission to Constantinople to reorganize the army of the O...

Trevelyan, Sir George Otto

(Encyclopedia)Trevelyan, Sir George Otto, 1838–1928, British historian and politician. He served as a Whig member of the House of Commons from 1865 to 1897. He held posts under W. E. Gladstone as civil lord of th...

Sanders, Otto Liman von

(Encyclopedia)Sanders, Otto Liman von: see Liman von Sanders, Otto. ...

Conrad the Red

(Encyclopedia)Conrad the Red, d. 955, duke of Lotharingia (Lorraine; 944–53). A Franconian adherent of the German king Otto I (later Holy Roman emperor), he was made duke of Lotharingia and married Otto's daughte...

Otto I, Holy Roman emperor

(Encyclopedia)Otto I or Otto the Great, 912–73, Holy Roman emperor (962–73) and German king (936–73), son and successor of Henry I of Germany. He is often regarded as the founder of the Holy Roman Empire. Bol...

Otto II, Holy Roman emperor

(Encyclopedia)Otto II, 955–83, Holy Roman emperor (973–83) and German king (961–83), son and successor of Otto I. He was crowned joint emperor in 967. Shortly after his father died Otto faced a rebellion by h...