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beryl

(Encyclopedia)beryl bĕrˈĭl [key], mineral, a silicate of beryllium and aluminum, Be3Al2Si6O18, extremely hard, occurring in hexagonal crystals that may be of enormous size and are usually white, yellow, green, b...

Zimbalist, Efrem

(Encyclopedia)Zimbalist, Efrem ĕˈfrəm zĭmˈbəlĭst [key], 1889–1985, Russian-American violinist. Zimbalist was a pupil of Leopold Auer at the St. Petersburg Conservatory. He made his debut in Berlin in 1907,...

juvenile delinquency

(Encyclopedia)juvenile delinquency, legal term for behavior of children and adolescents that in adults would be judged criminal under law. In the United States, definitions and age limits of juveniles vary, the max...

National Recovery Administration

(Encyclopedia)National Recovery Administration (NRA), in U.S. history, administrative bureau established under the National Industrial Recovery Act of 1933. In response to President Franklin Delano Roosevelt's cong...

Malcolm X

(Encyclopedia)Malcolm X, 1925–65, militant black leader in the United States, also known as El-Hajj Malik El-Shabazz, b. Malcolm Little in Omaha, Neb. A petty crimi...

Barnes Foundation

(Encyclopedia)Barnes Foundation, museum and arborteum in Merion and Philadelphia, Pa. Founded in 1922, it houses the impressive art collection amassed by Albert Coombs Barnes, 1872–1951, a wealthy Philadelphia ph...

Twain, Mark

(Encyclopedia)Twain, Mark, pseud. of Samuel Langhorne Clemens, 1835–1910, American author, b. Florida, Mo. As humorist, narrator, and social observer, Twain is unsurpassed in American literature. His novel The Ad...

algorithm

(Encyclopedia)algorithm –rĭzˌəm [key] [for Al-Khowarizmi], a clearly defined procedure for obtaining the solution to a general type of problem, often numerical. Much of ordinary arithmetic as traditionally tau...

Dumyat

(Encyclopedia)Dumyat dămēĕtˈə [key], city (1986 pop. 89,069), capital of Dumyat governorate, N Egypt, on Lake Manzala near the Mediterranean Sea. It is a manufacturing and trade center. Its products include gl...

Davis, Chuck

(Encyclopedia)Davis, Chuck (Charles Rudolph Davis), 1937–2017), American dancer, choreographer, and proponent of African dance, b. Raleigh, N.C. After serving in the navy, Davis studied with Martha Graham, Alvin ...