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Vesuvius

(Encyclopedia)Vesuvius vəso͞oˈvēəs [key], Ital. Vesuvio, active volcano, S Italy, on the eastern shore of the Bay of Naples, SE of Naples. The only other active volcano on the European mainland is the Campi Fl...

Williams, Tennessee

(Encyclopedia)Williams, Tennessee (Thomas Lanier Williams), 1911–83, American dramatist, b. Columbus, Miss., grad. State Univ. of Iowa, 1938. One of America's foremost 20th-century playwrights and the author of m...

militia

(Encyclopedia)militia məlĭshˈə [key], military organization composed of citizens enrolled and trained for service in times of national emergency. Its ranks may be filled either by enlistment or conscription. An...

Manhattan Project

(Encyclopedia)Manhattan Project, the wartime effort to design and build the first nuclear weapons (atomic bombs). With the discovery of fission in 1939, it became clear to scientists that certain radioactive materi...

wall

(Encyclopedia)wall, in architecture, protective, enclosing, or dividing vertical structure. Its thickness is determined by the material, height, and stress. It may be of studding and lath, either boarded or plaster...

Wounded Knee

(Encyclopedia)Wounded Knee, creek, rising in SW S.Dak. and flowing NW to the White River; site of the last major battle of the Indian wars. The ...

lava

(Encyclopedia)lava läˈvə [key], molten rock that erupts on the earth's surface, either on land or under the ocean, by a volcano or through a fissure. It solidifies into igneous rock that is also called lava. Bef...

Antietam campaign

(Encyclopedia)Antietam campaign ăntēˈtəm [key], Sept., 1862, of the Civil War. After the second battle of Bull Run, Gen. Robert E. Lee crossed the Potomac to invade Maryland and Pennsylvania. At Frederick, Md.,...

beach

(Encyclopedia)beach, a gently sloping zone where deposits of unconsolidated sediments are subject to wave action at the shore of an ocean or lake. Most of the sediment making up a beach is supplied by rivers or by ...

Weld, Theodore Dwight

(Encyclopedia)Weld, Theodore Dwight, 1803–95, American abolitionist, b. Hampton, Conn. In 1825 his family moved to upstate New York, and he entered Hamilton College. While in college he became a disciple of the e...