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Booth, John Wilkes

(Encyclopedia)Booth, John Wilkes wĭlks [key], 1838–65, American actor, the assassin of Abraham Lincoln, b. near Bel Air, Md.; son of Junius Brutus Booth and brother of Edwin Booth. He made his stage debut at the...

Korean War

(Encyclopedia)Korean War, conflict between Communist and non-Communist forces in Korea from June 25, 1950, to July 27, 1953. At the end of World War II, Korea was divided at the 38th parallel into Soviet (North Kor...

aluminum

(Encyclopedia)aluminum ălˌyo͞omĭnˈēəm [key], metallic chemical element; symbol Al; at. no. 13; at. wt. 26.98154; m.p. 660.37℃; b.p. 2,467℃; sp. gr. 2.6989 at 20℃; valence +3. Aluminum is a silver-white...

Ignatius of Loyola, Saint

(Encyclopedia)Ignatius of Loyola, Saint loiyōˈlə [key], 1491–1556, Spanish churchman, founder of the Jesuits (see Jesus, Society of), b. Loyola Castle near Azpeitia, Gipuzkoa, Spain. In 1539, Ignatius drew u...

Constance, Council of

(Encyclopedia)Constance, Council of, 1414–18, council of the Roman Catholic Church, some of its sessions being reckoned as the 16th ecumenical council. It was summoned to end the Great Schism (see Schism, Great),...

tsunami

(Encyclopedia)tsunami tso͝onäˈmē [key], series of catastrophic ocean waves generated by submarine movements, which may be caused by earthquakes, volcanic eruptions, landslides beneath the ocean, or an asteroid ...

New Mexico

(Encyclopedia)CE5 New Mexico, state in the SW United States. At its northwestern corner are the so-called Four Corners, where Colorado, New Mexico, Arizona, and Utah meet at right angles; New Mexico is also bord...

mental retardation

(Encyclopedia)mental retardation, below average level of intellectual functioning, usually defined by an IQ of below 70 to 75, combined with limitations in the skills necessary for daily living. Daily living skills...

Assam

(Encyclopedia)Assam ăsămˈ [key], state (2001 provisional pop. 26,638,407), c.30,000 sq mi (77,700 sq km), extreme NE India. Dispur is the capital. Almost completely separated from India by Bangladesh, Assam is b...

Mamluk

(Encyclopedia)Mamluk or Mameluke mămˈəlo͞ok [key] [Arab.,=slaves], a warrior caste dominant in Egypt and influential in the Middle East for over 700 years. Islamic rulers created this warrior caste by collectin...