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Hall, Charles Francis

(Encyclopedia) Hall, Charles Francis, 1821–71, American arctic explorer, b. Rochester, N.H. He became interested in the many search expeditions for Sir John Franklin's party, and with Eskimo…

Saskatchewan, river, Canada

(Encyclopedia) Saskatchewan, river, c.340 mi (550 km) long, formed by the confluence of the North Saskatchewan (c.760 mi/1,220 km long) and the South Saskatchewan (c.550 mi/890 km long) rivers near…

Pichegru, Charles

(Encyclopedia) Pichegru, CharlesPichegru, Charlesshärl pēshgrüˈ [key], 1761–1804, French general in the French Revolutionary Wars. Successful on the Rhine front (1793), he invaded (1794) the…

Franz Josef Land

(Encyclopedia) Franz Josef LandFranz Josef Landfrăns jōˈzəf, fränts yōˈzĕf [key], Rus. Zemlya Frantsa Iosifa, archipelago, c.6,300 sq mi (16,320 sq km), in the Arctic Ocean N of Novaya Zemlya, Russia…

Thule , town, Greenland

(Encyclopedia) ThuleThuleth&oomacr;ˈlē, t&oomacr;ˈ– [key] or QaanaaqThulekänäkˈ [key], town (1995 pop. 627), N Greenland, on the north side of Inglefield Gulf. The name of Thule was…

Yenisei

(Encyclopedia) YeniseiYeniseiyĕnĭsāˈ, Rus. yĕnyĭsyāˈ [key], chief river of Siberia, c.2,500 mi (4,020 km) long, central Siberian Russia. It is formed at Kyzyl, Tuva Republic, by the junction of the…

autism

(Encyclopedia) autismautismôˈtĭzəm [key], developmental disability resulting from a neurological disorder that affects the normal functioning of the brain. It is characterized by the abnormal…

Down syndrome

(Encyclopedia) Down syndrome, congenital disorder characterized by mild to severe mental retardation, slow physical development, and characteristic physical features. Down syndrome affects about 1 in…

geriatrics

(Encyclopedia) geriatricsgeriatricsjĕrēăˈtrĭks [key], the branch of medicine concerned with conditions and diseases of the aged. Many disabilities in old age are caused by or related to the…

Astraea

(Encyclopedia) AstraeaAstraeaăstrēˈə [key], in Greek religion and mythology, goddess of justice; daughter of Zeus and Themis. Because of the wickedness of man, she withdrew from the earth at the end…