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adolescence

(Encyclopedia)adolescence, time of life from onset of puberty to full adulthood. The exact period of adolescence, which varies from person to person, falls approximately between the ages 12 and 20 and encompasses b...

motivation

(Encyclopedia)motivation, in psychology, the intention of achieving a goal, leading to goal-directed behavior. Some human activity seems to be best explained by postulating an inner directing drive. While a drive i...

Madonna

(Encyclopedia)Madonna (Madonna Louise Ciccone) mədŏnˈə, chĭkōˈnē [key], 1958–, American p...

Marshall, Thurgood

(Encyclopedia)Marshall, Thurgood, 1908–93, U.S. lawyer and associate justice of the U.S. Supreme Court (1967–91), b. Baltimore. He received his law degree from Howard Univ. in 1933. In 1936 he joined the legal ...

Beauvoir, Simone de

(Encyclopedia)Beauvoir, Simone de sēmônˈ də bōvwärˈ [key], 1908–86, French author. A leading exponent of existentialism, she is closely associated with Jean-Paul Sartre, with whom she had a life-long relat...

Thurber, James

(Encyclopedia)Thurber, James, 1894–1961, American humorist, b. Columbus, Ohio, studied at Ohio State Univ. After working on various newspapers he served on the staff of the New Yorker from 1927 to 1933 and was la...

chorionic villus sampling

(Encyclopedia)chorionic villus sampling (CVS) or chorionic villus biopsy (CVB) kōrˌē-ŏnˈĭk, kôrˌ– [key], diagnostic procedure in which a sample of chorionic villi from the developing placenta is removed f...

fertilization

(Encyclopedia)CE5 Fertilization of an egg cell fertilization, in biology, process in the reproduction of both plants and animals, involving the union of two unlike sex cells (gametes), the sperm and the ovum, f...

fraternal orders

(Encyclopedia)fraternal orders, organizations whose members are usually bound by oath and who make extensive use of secret ritual in the conduct of their meetings. Most fraternal orders are limited to members of on...

Dravidian languages

(Encyclopedia)Dravidian languages drəvĭdˈēən [key], family of about 23 languages that appears to be unrelated to any other known language family. The Dravidian languages are spoken by more than 200 million peo...