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Black Warrior, river, United States

(Encyclopedia)Black Warrior, navigable river, 178 mi (286 km) long, rising in N central Ala. and flowing generally SW to the Tombigbee River. The Black Warrior drains a coal- and cotton-producing area, but these in...

Roosevelt, river, Brazil

(Encyclopedia)Roosevelt, river, c.400 mi (640 km) long, NW Brazil. It was called the Rio da Dúvida [River of Doubt] until it was explored by Theodore Roosevelt in 1913. Renamed in his honor, it is occasionally cal...

Eastern Highlands

(Encyclopedia)Eastern Highlands, c.2,400 mi (3,860 km) long, general name for the mountains and plateaus roughly paralleling the east and southeast coasts of Australia (including Tasmania) and forming the Continent...

amenorrhea

(Encyclopedia)amenorrhea āmĕnˌərēˈa, əmĕnˌ– [key], cessation of menstruation. Primary amenorrhea is a delay in or a failure to start menstruation; secondary amenorrhea is an unexpected stop to the menstr...

Absheron

(Encyclopedia)Absheron əp– [key], peninsula, c.40 mi (60 km) long, extending into the Caspian Sea, E Azerbaijan. It is a dry, hilly area at the eastern end of the Greater Caucasus Mts. and is underlain by rich o...

Great Bear Lake

(Encyclopedia)Great Bear Lake, largest lake of Canada and fourth largest of North America, c.12,275 sq mi (31,800 sq km), c.190 mi (310 km) long and from 25 to 110 mi (40–177 km) wide, Northwest Territories, on t...

galley

(Encyclopedia)galley, long, narrow vessel widely used in ancient and medieval times, propelled principally by oars but also fitted with sails. The earliest type was sometimes 150 ft (46 m) long with 50 oars. Rowers...

jaçana

(Encyclopedia)jaçana jəkănˈə, jəkänˈə [key], common name for members of the Jacanidae, a family of tropical and subtropical wading birds. Jaçanas, also called lily-trotters and lotus-birds, have long toes...

loon

(Encyclopedia)loon, common name for migratory aquatic birds found in fresh- and saltwater in the colder parts of the Northern Hemisphere. Its strange, laughing call carries for great distances. Like the grebes, loo...

Lötschberg Railway

(Encyclopedia)Lötschberg Railway löchˈbĕrkh [key], electrical railroad, crossing the Bernese Alps from Thun, W central Switzerland, to Brig, on the Rhône River, S Switzerland. It passes through the Lötschberg...