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nullity of marriage

(Encyclopedia)nullity of marriage, in law, an unlawful marriage that is either void or voidable because of conditions existing at the time of the marriage. A bigamous or incestuous marriage, for example, is void, a...

Nystad, Treaty of

(Encyclopedia)Nystad, Treaty of: see Northern War. ...

Occam, William of

(Encyclopedia)Occam, William of: see William of Occam. ...

Ockham, William of

(Encyclopedia)Ockham, William of: see William of Occam. ...

Ottawa, University of

(Encyclopedia)Ottawa, University of, at Ottawa, Ont., Canada; bilingual; provincially supported; founded 1848 as the College of Bytown. It became the Univ. of Ottawa in 1866. It has faculties of arts, administratio...

Otter, Peaks of

(Encyclopedia)Otter, Peaks of, two peaks, W central Va., in the Blue Ridge, W of Lynchburg. The one, Flat Top, is 4,004 ft (1,220 m) high; the other, Sharp Top, 3,875 ft (1,181 m). They are on national parkland adm...

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...

Oxford, Provisions of

(Encyclopedia)Oxford, Provisions of: see Provisions of Oxford. ...

Oxford, University of

(Encyclopedia)Oxford, University of, at Oxford, England, one of the oldest English-language universities in the world. The university was a leading center of learning throughout the Middle Ages; such scholars as Ro...

Azov, Sea of

(Encyclopedia)Azov, Sea of, Gr. Maiotis, Lat. Palus Maeotis, ancient Rus. Surozhskoye, northern arm of the Black Sea, c.14,000 sq mi (36,300 sq km), shared by S European Russia and E Ukraine. The shallow sea (maxim...