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Byrd, Richard Evelyn

(Encyclopedia)Byrd, Richard Evelyn, 1888–1957, American aviator and polar explorer, b. Winchester, Va. He took up aviation in 1917, and after World War I he gained great fame in the air. He commanded the naval ai...

Berrigan brothers

(Encyclopedia)Berrigan brothers bĕrˈĭgən [key], American Catholic priests, writers, and social activists. Daniel Berrigan, 1921–2016, b. Syracuse, N.Y., was ordained in the Society of Jesus (Jesuits) in 1952....

pterosaur

(Encyclopedia)pterosaur tĕrˈəsôrˌ [key] [Gr., = winged lizard], extinct flying reptile (commonly called pterodactyl [Gr., = wing finger]) of the order Pterosauria, common in the late Triassic and Creta...

airship

(Encyclopedia)airship, an aircraft that consists of a cigar-shaped gas bag, or envelope, filled with a lighter-than-air gas to provide lift, a propulsion system, a steering mechanism, and a gondola accommodating pa...

computer graphics

(Encyclopedia)computer graphics, the transfer of pictorial data into and out of a computer. Using analog-to-digital conversion techniques, a variety of devices—such as curve tracers, digitizers, and light pens—...

Confederate cruisers

(Encyclopedia)Confederate cruisers, in U.S. history, warships constituting the South's seagoing navy. At the outbreak of the Civil War the United States ranked next to Great Britain in merchant marine. Since almost...

grasshopper

(Encyclopedia)grasshopper, name applied to almost 9,000 different species of singing, jumping insects in two families of the order Orthoptera. Grasshoppers are long, slender, winged insects with powerful hind legs ...

Musharraf, Pervez

(Encyclopedia)Musharraf, Pervez pĕrvāsˈ mo͞oshärˈrŭf [key], 1943–2023, Pakistani army offi...

Murdoch, Dame Iris

(Encyclopedia)Murdoch, Dame Iris (Dame Jean Iris Murdoch) mûrˈdŏk [key], 1919–99, British novelist and philosopher, b. Dublin, Ireland, grad. Oxford (1942). In 1948 she was named lecturer in philosophy at Oxfo...

Parthia

(Encyclopedia)Parthia pärˈthēə [key], ancient country of Asia, SE of the Caspian Sea. In its narrowest limits it consisted of a mountainous region intersected with fertile valleys, lying S of Hyrcania and corre...