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conjoined twins

(Encyclopedia)conjoined twins, congenitally united organisms that are complete or nearly complete individuals, historically known as Siamese twins. They develop from a single fertilized ovum that has divided imperf...

Murdoch, Rupert

(Encyclopedia)Murdoch, Rupert (Keith Rupert Murdoch), 1931–, Australian-American publishing magnate. Combining sensationalist journalism (often reflective of his generally hawkish, strongly conservative political...

asthenosphere

(Encyclopedia)asthenosphere ăsthēnˈəsfēr [key], region in the upper mantle of the earth's interior, characterized by low-density, semiplastic (or partially molten) rock material chemically similar to the overl...

asthma

(Encyclopedia)asthma ăzˈmə, ăsˈ– [key], chronic inflammatory respiratory disease characterized by periodic attacks of wheezing, shortness of breath, and a tight feeling in the chest. A cough producing sticky...

Mithra

(Encyclopedia)Mithra mĭthˈrə [key], ancient god of Persia and India (where he was called Mitra). Until the 6th cent. b.c., Mithra was apparently a minor figure in the Zoroastrian system. Under the Achaemenids, M...

Penn, Irving

(Encyclopedia)Penn, Irving, 1917–2009, American photographer, elder brother of Arthur Penn, b. Plainfield, N.J.; studied Philadelphia Museum School of Industrial Art (now University of the Arts, 1934–38). Origi...

Limón, José

(Encyclopedia)Limón, José (José Arcadio Limón) hōsāˈ lĭmōnˈ, lē– [key], 1908–72, American modern dancer, choreographer, and teacher known for powerfully masculine dancing and dramatic choreography. H...

La Fontaine, Jean de

(Encyclopedia)La Fontaine, Jean de zhäN də [key], 1621–95, French poet, whose celebrated fables place him among the masters of world literature. He was born at Château-Thierry to a bourgeois family. A restless...

killer whale

(Encyclopedia)killer whale, orca, or grampus, a large, rapacious marine mammal of the dolphin family. Historically considered one species, Orcinus orca, killer whales may be classified into several types, based on...

Plzeň

(Encyclopedia)Plzeň pŭlˈzĕnyə [key], Ger. Pilsen, city (1991 pop. 173,008), W Czech Republic, in Bohemia, at the confluence of several rivers. One of the Czech Republic's largest cities, it lies near a belt of...