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automotive industry ... aversion therapy
automotive industry
all those companies and activities involved in the manufacture of motor vehicles, including most components, such as engines and bodies, but excluding tires, batteries, and fuel. The industry's principal products are passenger automobiles and light trucks, including pickups, vans, and sport utility vehicles. Commercial vehicles (i.e., delivery trucks and large ...
autonomic nervous system
in vertebrates, the part of the nervous system that controls and regulates the internal organs without any conscious recognition or effort by the organism. The autonomic nervous system comprises two antagonistic sets of nerves, the sympathetic and parasympathetic nervous systems. The sympathetic nervous system connects the internal organs to the ...
autopsy
dissection and examination of a dead body and its organs and structures. An autopsy may be performed to determine the cause of death, to observe the effects of disease, and to establish the evolution and mechanisms of disease processes. The word autopsy is derived from the Greek autopsia, meaning "the ...
autostrada
national Italian expressway system built by the government as toll roads. The first, from Venice to Turin, was begun in 1924; construction was continuing in the early 1980s. The autostrada has three undivided lanes on a 33-foot (10-metre) roadway with 3-ft shoulders. Access is limited, with restrictions on commercial vehicles.
autotelism
the belief that a work of art, especially a work of literature, is an end in itself or provides its own justification and does not exist to serve a moral or didactic purpose. It was adopted by proponents of New Criticism in the 1920s and is similar to the "art ...
autotomy
the ability of certain animals to release part of the body that has been grasped by an external agent. A notable example is found among lizards that break off the tail when it is seized by a predator. The phenomenon is found also among certain worms, salamanders, and spiders. The ...
autotroph
in ecology, an organism that serves as a primary producer in a food chain. Autotrophs obtain energy and nutrients by harnessing sunlight through photosynthesis (photoautotrophs) or, more rarely, obtain chemical energy through oxidation (chemoautotrophs) to make organic substances from inorganic ones. Autotrophs do not consume other organisms; they are, however, ...
Autry, Gene
American actor, singer, and entrepreneur who was one of Hollywood's premier singing cowboys and the best-selling country and western recording artist of the 1930s and early '40s.
autumn
season of the year between summer and winter during which temperatures gradually decrease. It is often called fall in the United States because leaves fall from the trees at that time. Autumn is usually defined in the Northern Hemisphere as the period between the autumnal equinox (day and night equal ...
Autun
town, Saone-et-Loire departement, Bourgogne (Burgundy) region, central France, on the Arroux River, southwest of Dijon. Augustodunum (Autun) succeeded Bibracte as the Gallic oppidum (fortified town) and was an important Roman city renowned for its schools of rhetoric. Much of the Roman wall, with two 3rd-century gates, remains, as well as ...
autunite
phosphate mineral, hydrated calcium and uranium phosphate [Ca(UO2)2 (PO4)210-12H2O], that is an ore of uranium. It forms translucent to transparent, yellow to pale-green crystals, scaly masses, or crusts in hydrothermal veins and pegmatites, where it occurs as an alteration product of uraninite. It has been found in Cornwall, Eng.; Katanga, ...
Auvergne
administrative region and historical region of France encompassing the central departements of Allier, Puy-de-Dome, Cantal, and Haute-Loire. Auvergne is bounded by the regions of Centre and Burgundy (Bourgogne) to the north, Rhone-Alpes to the east, Languedoc-Roussillon and Midi-Pyrenees to the south, and Limousin to the west. The capital is Clermont-Ferrand. ...
Auwers, Arthur von
German astronomer known for his star catalogs.
Auxerre
town, capital of Yonne departement, Bourgogne (Burgundy) region, central France, on the Yonne River. The town, which flourished in pre-Roman and Roman days, became the seat of a bishop and a civitas (provincial capital) in the 3rd century. It was united to France by Louis XI in the 1400s. Auxerre's ...
auxiliary
in grammar, a helping element, typically a verb, that adds meaning to the basic meaning of the main verb in a clause. Auxiliaries can convey information about tense, mood, person, and number. An auxiliary verb occurs with a main verb that is in the form of an infinitive or a ...
auxin
any of a group of hormones that regulate plant growth, particularly by stimulating cell elongation in stems and inhibiting it in roots. For example, auxins influence the growth of stems toward light (phototropism) and against the force of gravity (geotropism). Auxins also play a role in cell division and differentiation, ...
Ava
ancient capital of central Myanmar (Burma), on the left bank of the Irrawaddy River at the Myitnge confluence. It is linked by a road and rail bridge, 5,894 feet (1,796 m) long, to the town of Sagaing; this is the only place where the Irrawaddy is bridged. Its name is ...
Avadana
legendary material centring on the Buddha's explanations of events by a person's worthy deeds in a previous life. The Pali cognate of the term is Apadana. Avadana designates both the class of such stories scattered within the Vinaya Pitaka ("Basket of Discipline") and separate collections based upon them. Among the ...
avadavat
(species Amandava, or Estrilda, amandava), plump, 8-centimetre- (3-inch-) long bird of the waxbill (q.v.) group (order Passeriformes), a popular cage bird. The avadavat is abundant in marshes and meadows of southern Asia (introduced in Hawaii). The male, in breeding plumage, is bright red with brown mottling and white speckling, hence ...
avahi
long-legged arboreal lemur of Madagascar. Avahis have short arms, a short muzzle, and a round head with small ears hidden in woolly fur. Nocturnal and vegetarian, they live in small groups in both rainforests and patches of dry forests, typically clinging vertically to the trees. Groups consist of a male, ...
avalanche
a mass of material moving rapidly down a slope. An avalanche is typically triggered when material on a slope breaks loose from its surroundings; this material then quickly collects and carries additional material down the slope. There are various kinds of avalanches, including rock avalanches (which consist of large segments ...
avalanche effect
in physics, a sudden increase in the flow of an electrical current through a nonconducting or semiconducting solid when a sufficiently strong electrical force is applied. The ability of most nonmetallic solids to carry an ordinary electrical current is limited by the scarcity of electrons free to move in the ...
Avalokiteshvara
the bodhisattva ("Buddha-to-be") of infinite compassion and mercy, possibly the most popular of all Buddhist deities, beloved throughout the Buddhist world. He supremely exemplifies the bodhisattva's resolve to postpone his own Buddhahood until he has helped every being on earth achieve emancipation.
Avalon
island to which Britain's legendary king Arthur was conveyed for the healing of his wounds after his final battle. It is first mentioned in Geoffrey of Monmouth's Historia regum Britanniae (c. 1136), while the same author's Vita Merlini (c. 1150) described it as "the island of apples ['Insula pomorum'], called ...
Avalon Peninsula
peninsula in southeastern Newfoundland, Canada; it is joined to the main part of the island by a 4-mi- (6-km-) wide isthmus between Placentia and Trinity bays and extends for about 110 mi with a maximum width of 60 mi. Its high point is about 1,000 ft (300 m) on the ...
Avalon, Frankie
American vocalist and actor best known for his chart-topping songs in the mid-1950s and early 1960s and as the star of youth-oriented beach movies.
Avalonian orogeny
a mountain-building event that affected the eastern portion of the Appalachian Geosyncline in late Precambrian time (Precambrian time occurred from 3.96 billion to 540 million years ago). Evidence for the orogeny consists of igneous intrusions, folding of strata, and the development of angular unconformities in the Avalon Peninsula of Newfoundland, ...
Avanti
kingdom of ancient India, in the territory of present Madhya Pradesh state. The area was for a time part of the historical province of Malwa. About 600 BCE the Avanti capital was Mahismati (probably modern Godarpura on the Narmada River), but it was soon moved to Ujjayini (near present-day Ujjain). ...
Avar
one of a people of undetermined origin and language, who, playing an important role in eastern Europe (6th-9th century), built an empire in the area between the Adriatic and the Baltic Sea and between the Elbe and Dnieper rivers (6th-8th century). Inhabiting an area in the Caucasus region in 558, ...
Avar-Andi-Dido languages
group of languages spoken in western and central Dagestan republic, Russia, and in part of Azerbaijan. The group includes the Avar language, the Andi languages (Andi, Botlikh, Godoberi, Chamalal, Bagvalal, Tindi, Karata, and Akhvakh), and the Dido languages (Dido or Tsez, Khvarshi, Hinukh, Bezhta, and Hunzib or Kapucha). Avar, the ...
Avarua
town and capital of the Cook Islands, South Pacific Ocean. It is located on the north-central coast of the island of Rarotonga, in the southern Cook Islands, about 2,100 miles (3,400 km) north of New Zealand. Avarua is Rarotonga's main town and commercial centre.
Avatamsaka-sutra
voluminous Mahayana Buddhist text that some consider the most sublime revelation of the Buddha's teachings. Scholars value the text for its revelations about the evolution of thought from early Buddhism to fully developed Mahayana.
avatar
in Hinduism, the incarnation of a deity in human or animal form to counteract some particular evil in the world. The term usually refers to these 10 appearances of Vishnu: Matsya (fish), Kurma (tortoise), Varaha (boar), Narasimha (half man, half lion), Vamana (dwarf), Parashurama (Rama with the axe), Rama (hero ...
Avebury
archaeological site in Kennet district, administrative and historic county of Wiltshire, England, some 18.5 miles (30 km) north of Stonehenge. Lying on the River Kennet at the foot of the Marlborough Downs, it is one of the largest and best-known prehistoric sites in Europe, encompassing 28.5 acres (11.5 hectares). Avebury ...
Avedon, Richard
one of the leading mid-20th-century photographers, noted for his portraits and fashion photographs.
Avellaneda
partido (county) of eastern Gran (Greater) Buenos Aires, eastern Argentina. It lies immediately southeast of the city of Buenos Aires, in Buenos Aires provincia (province), on the Rio de la Plata estuary. In the late 19th and early 20th centuries the area was an industrial slum, slaughterhouse, and port district, ...
Avellino
city, Campania region, southern Italy, on the Sabato River surrounded by the Apennines, east of Naples. Its name is derived from Abellinum, a stronghold of the Hirpini (an ancient Italic people) and later a Roman colony, the site of which lies just to the east of the modern city. Conquered ...
Avempace
earliest known representative in Spain of the Arabic Aristotelian-Neoplatonic philosophical tradition and forerunner of the polymath scholar Ibn Tufayl and of the philosopher Averroes.
Avenarius, Richard
German philosopher who taught at Zurich and founded the epistemological theory of knowledge known as empiriocriticism, according to which the major task of philosophy is to develop a "natural concept of the world" based on pure experience. Traditional metaphysicians believed in two categories of experience, inner and outer, and held ...
avens
any of various perennial, flowering plants of the genus Geum, within the rose family (Rosaceae).
Aventine secession
the withdrawal by some 150 left and centre deputies from the Italian Chamber of Deputies in June 1924 to show their opposition to the rule of the Fascist leader Benito Mussolini. The move occurred at the time of a public reaction against Mussolini caused by the political murder of Giacomo ...
Aventinus
Humanist and historian sometimes called the "Bavarian Herodotus."
Aventis
former French pharmaceutical company founded in 1999 through the merger of the German firm Hoechst and the French company Rhone-Poulenc. With headquarters in Strasbourg, France, Aventis was the product of the first transnational merger to combine large rival companies from France and Germany. It became part of the French pharmaceutical ...
aventurine
either of two gem minerals, one a plagioclase feldspar and the other quartz. Both have a sparkling reflection from oriented minute inclusions of mica or hematite.
avera
in Judaism, a moral transgression (or sin) against God or man. It may vary from grievous to slight and is the opposite of mitzwa (commandment), understood in the broad sense of any good deed. Whereas Jews are taught to prefer death to the willful commission of any of the three ...
average
in maritime law, loss or damage, less than total, to maritime property (a ship or its cargo), caused by the perils of the sea. An average may be particular or general. A particular average is one that is borne by the owner of the lost or damaged property (unless he ...
Averescu, Alexandru
military leader and politician who three times served as premier of Romania and was the country's national hero in World War I.
Averno, Lake of
crater lake in Napoli province, Campania region, southern Italy, in the Campi Flegrei volcanic region, west of Naples. It is 7 ft (2 m) above sea level, 118 ft deep, and nearly 2 mi (more than 3 km) in circumference, with no natural outlet. Its Greek name, Aornos, was interpreted ...
Averroes
influential Islamic religious philosopher who integrated Islamic traditions with ancient Greek thought. At the request of the Almohad caliph Abu Ya'qub Yusuf, he produced a series of summaries and commentaries on most of Aristotle's works (1169-95) and on Plato's Republic, which exerted considerable influence in both the Islamic world and ...
Aversa
town and episcopal see, Campania region, southern Italy, in the fertile Campanian plain north of Naples. Founded in 1030 by the Normans, who made it the capital of the first Norman county in Italy, it became a centre of culture, noted for its grammar schools, and a diocese of the ...
aversion therapy
psychotherapy designed to cause a patient to reduce or avoid an undesirable behaviour pattern by conditioning the person to associate the behaviour with an undesirable stimulus. The chief stimuli used in the therapy are electrical, chemical, or imagined aversive situations. In the electrical therapy, the patient is given a lightly ...