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nail, in anatomy

(Encyclopedia) nail, in anatomy, the horny outgrowth shielding the tip of the finger and the toe in humans and most other primates. The nail consists of dead cells pushed outward by dividing cells in…

Intergovernmental Panel on Climate Change

(Encyclopedia) Intergovernmental Panel on Climate Change (IPCC), scientific panel created (1988) by two United Nations organizations, the UN Environment Program and the World Meteorological…

Dimitrov, Georgi

(Encyclopedia) Dimitrov, GeorgiDimitrov, Georgigĕôrˈgē dĭmēˈtrŏf [key], 1882–1949, Bulgarian Communist leader. A revolutionary from boyhood, he was a leader in the 1923 Communist uprising against…

Hughes, John Joseph

(Encyclopedia) Hughes, John Joseph, 1797–1864, American Roman Catholic churchman, b. Co. Tyrone, Ireland. He joined his family in the United States in 1817 and on graduating from Mt. St. Mary's…

Hincks, Sir Francis

(Encyclopedia) Hincks, Sir Francis, 1807–85, Canadian journalist and statesman, b. Ireland. Settling (1832) in York (now Toronto), he was soon drawn into the Reform party. In 1839 he became editor of…

John of Procida

(Encyclopedia) John of ProcidaJohn of Procidaprōˈchēdä [key], c.1225–c.1302, Italian conspirator, lord of the island of Procida. He was an ardent supporter of the Hohenstaufen cause in Sicily and…

Rob Roy

(Encyclopedia) Rob Roy [Scottish Gaelic,=red Rob], 1671–1734, Scottish freebooter, whose real name was Robert MacGregor. He is remembered chiefly as he figures in Sir Walter Scott's novel Rob Roy (…

rust, in botany

(Encyclopedia) rust, in botany, name for various parasitic fungi of the order Uredinales and for the diseases of plants that they cause. Rusts form reddish patches of spores on the host plant. About…

Rhee, Syngman

(Encyclopedia) Rhee, SyngmanRhee, Syngmansĭngˈmən rē [key], 1875–1965, Korean statesman, president of the Republic of Korea (1948–60). Early an advocate of Korean independence, he led a demonstration…

repetitive stress injury

(Encyclopedia) repetitive stress injury or repetitive strain injury (RSI), injury caused by repeated movement of a particular part of the body. Often seen in workers whose physical routine is…