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liver

(Encyclopedia) liver, largest glandular organ of the body, weighing about 3 lb (1.36 kg). It is reddish brown in color and is divided into four lobes of unequal size and shape. The liver lies on the…

Niger, river, Africa

(Encyclopedia) NigerNigernīˈjər [key], great river of W Africa, c.2,600 mi (4,180 km) long, rising on the Fouta Djallon plateau, SW Guinea, and flowing NE through Guinea and into Mali. In central…

Nanjing

(Encyclopedia) NanjingNanjingnänˈjĭngˈ [key] or NankingNankingnănˈkĭngˈ [key] [southern capital], city (1994 est. pop. 2,224,200), capital of Jiangsu prov., E central China, in a bend of the Chang (…

maser

(Encyclopedia) masermasermāˈzər [key], device for creation, amplification, and transmission of an intense, highly focused beam of high-frequency radio waves. The name maser is an acronym for…

Michigan, Lake

(Encyclopedia) Michigan, Lake, 22,178 sq mi (57,441 sq km), 307 mi (494 km) long and 30 to 120 mi (48–193 km) wide, bordered by Mich., Ind., Ill., and Wis.; third largest of the Great Lakes and the…

Heaney, Seamus

(Encyclopedia) Heaney, Seamus (Seamus Justin Heaney)Heaney, Seamusshāˈməs, hēˈnē [key], 1939–2013, Irish poet, one of the finest contemporary English poets, b. Londonderry (now Derry), Northern…

catacombs

(Encyclopedia) catacombscatacombskatˈəkōmz [key], cemeteries of the early Christians and contemporary Jews, arranged in extensive subterranean vaults and galleries. Besides serving as places of…

Tuvalu

(Encyclopedia) TuvaluTuvalut&oomacr;välˈ&oomacr; [key], independent Commonwealth nation (2015 est. pop. 11,000), 10 sq mi (26 sq km), composed of nine low coral atolls, formerly known as the…

Flashcards

Practice your math facts with these flashcards. Find addition, subtraction, multiplication and division flashcards, from basic math facts to 3-digit problems. Addition Flashcards…

public health

(Encyclopedia) public health, field of medicine and hygiene dealing with the prevention of disease and the promotion of health by government agencies. In the United States, public health authorities…