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hemophilia

(Encyclopedia)hemophilia hēˌməfĭlˈēə, –fēlˈyə [key], genetic disease in which the clotting ability of the blood is impaired and excessive bleeding results. The disease is transmitted through females but...

rhodium

(Encyclopedia)rhodium rōˈdēəm [key], metallic chemical element; symbol Rh; at. no. 45; at. wt. 102.90550; m.p. about 1,966℃; b.p. 3,727±100℃; sp. gr. 12.41 at 20℃; valence +2, +3, +4, +5, or +6. Rhodium ...

Goldberger, Joseph

(Encyclopedia)Goldberger, Joseph, 1874–1929, American medical research worker, b. Austria-Hungary, grad. Bellevue Hospital Medical College, 1895. He came to the United States at the age of six. He joined the U.S....

Castle Pinckney

(Encyclopedia)Castle Pinckney, fortification on Shutes Folly, an island in the harbor of Charleston, S.C.; built in 1797, when war with France seemed imminent; named for the American diplomat Charles Cotesworth Pin...

Hanno, Carthaginian statesman

(Encyclopedia)Hanno, fl. 250–200 b.c., Carthaginian statesman, leader of the conservative land-owning party and consistent opponent of the Barca family. His refusal to pay the mercenaries of Hamilcar Barca brough...

intelligence

(Encyclopedia)intelligence, in psychology, the general mental ability involved in calculating, reasoning, perceiving relationships and analogies, learning quickly, storing and retrieving information, using language...

Klyuchevsky, Vasily Osipovich

(Encyclopedia)Klyuchevsky, Vasily Osipovich vəsēˈlyē ôˈsĭpəvĭch klyo͞ochĕvˈskē [key], 1841–1911, Russian historian. Interpreting history from a sociological viewpoint, he emphasized geographic and ec...

solar constant

(Encyclopedia)solar constant, the average amount of radiant energy received by the earth's atmosphere from the sun; its value is about 2 calories per min incident on each square centimeter of the upper atmosphere. ...

hay, livestock fodder

(Encyclopedia)hay, wild or cultivated plants, chiefly grasses and legumes, mown and dried for use as livestock fodder. Hay is an important factor in cattle raising and is one of the leading crops of the United Stat...

sneeze

(Encyclopedia)sneeze, involuntary violent expiration of air through the nose and mouth. It results from stimulation of the nervous system in the nose, causing sudden contraction of the muscles of expiration. The st...