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Parthia

(Encyclopedia)Parthia pärˈthēə [key], ancient country of Asia, SE of the Caspian Sea. In its narrowest limits it consisted of a mountainous region intersected with fertile valleys, lying S of Hyrcania and corre...

oboe

(Encyclopedia)oboe ōˈboi, hōˈ– [key], woodwind instrument of conical bore, its mouthpiece having a double reed. The instruments possessing these general characteristics may be referred to as the oboe family, ...

penguin

(Encyclopedia)penguin, originally the common name for the now extinct great auk of the N Atlantic and now used (since the 19th cent.) for the unrelated, generally antarctic diving birds of the Southern Hemisphere. ...

Cameron, David William Duncan

(Encyclopedia)Cameron, David William Duncan kămˈərən [key], 1966–, British political leader, b. London. Educated at Eton and Oxford, he worked for the Conservative party's research department beginning in 198...

Burgoyne, John

(Encyclopedia)Burgoyne, John bərgoinˈ [key], 1722–92, British general and playwright. In the Seven Years War, his victory over the Spanish in storming (1762) Valencia de Alcántara in Portugal made him the toas...

vasectomy

(Encyclopedia)vasectomy, male sterilization by surgical excision of the vas deferens, the thin duct that carries sperm cells from the testicles to the prostate and the penis. Vasectomy is a popular method of birth ...

blood clotting

(Encyclopedia)blood clotting, process by which the blood coagulates to form solid masses, or clots. In minor injuries, small oval bodies called platelets, or thrombocytes, tend to collect and form plugs in blood ve...

raccoon

(Encyclopedia)raccoon, nocturnal New World mammal of the genus Procyon. The common raccoon of North America, Procyon lotor, also called coon, is found from S Canada to South America, except in parts of the Rocky Mt...

birth defects

(Encyclopedia)birth defects, abnormalities in physical or mental structure or function that are present at birth. They range from minor to seriously deforming or life-threatening. A major defect of some type occurs...

Yorktown campaign

(Encyclopedia)Yorktown campaign, 1781, the closing military operations of the American Revolution. After his unsuccessful Carolina campaign General Cornwallis moved into Virginia to join British forces there. His l...