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Cubango

(Encyclopedia)Cubango ōkəvängˈgō [key], river, c.1,000 mi (1,610 km) long, rising in the highlands of central Angola, W central Africa, and flowing southeast, across the Caprivi Strip, Namibia, to the Okavango...

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...

Duhamel, Georges

(Encyclopedia)Duhamel, Georges zhôrzh düämĕlˈ [key], 1884–1966, French novelist and playwright. From Duhamel's experience as a surgeon during World War I came Vie des martyrs (1917, tr. The New Book of Marty...

Kalevala

(Encyclopedia)Kalevala käˈlĕväˌlä [key], Finnish national epic. It is a compilation of verses recounting extraordinary deeds of three semidivine brothers from mythical Kaleva, land of the heroes. Zakarias Top...

Kinsey, Alfred Charles

(Encyclopedia)Kinsey, Alfred Charles kĭnˈzē [key], 1894–1956, American biologist, b. Hoboken, N.J., grad. Bowdoin College (B.S., 1916), Harvard (D.Sc., 1920). He was associated with the Univ. of Indiana from 1...

Persephone

(Encyclopedia)Persephone prōsûrˈpənē [key], in Greek and Roman religion and mythology, goddess of fertility and queen of the underworld. She was the daughter of Zeus and Demeter. When she was still a beautiful...

Boussingault, Jean Baptiste Joseph Dieudonné

(Encyclopedia)Boussingault, Jean Baptiste Joseph Dieudonné zhäN bätēstˈ zhôzĕfˈ dyödônāˈ bo͞osăNgōˈ [key], 1802–87, French agricultural chemist. He was professor of chemistry at Lyons and later pr...

tapeworm

(Encyclopedia)tapeworm, name for the parasitic flatworms forming the class Cestoda. All tapeworms spend the adult phase of their lives as parasites in the gut of a vertebrate animal (called the primary host). Most ...

sun, in astronomy

(Encyclopedia)CE5 Structure of the sun sun, intensely hot, self-luminous body of gases at the center of the solar system. Its gravitational attraction maintains the planets, comets, and other bodies of the sola...

sleep

(Encyclopedia)sleep, resting state in which an individual becomes relatively quiescent and relatively unaware of the environment. During sleep, which is in part a period of rest and relaxation, most physiological f...