(Translated by https://www.hiragana.jp/)
Encyclopedia - Britannica Online Encyclopedia
The Wayback Machine - https://web.archive.org/web/20080828114434/http://www.britannica.com:80/bps/browse/alpha/d/32
Remember me
A-Z Browse

A-Z Browse

  • defense attorney (law)
    The defense lawyer has a double function in the investigation phase of the criminal process: to assist the suspect in gathering exonerating evidence and to protect him from violations of his rights at the hands of law-enforcement personnel. All legal systems grant the suspect the right to the assistance of an attorney, and in many countries the suspect must be informed of this right before......
  • “Défense de la France” (French newspaper)
    daily newspaper published in Paris. Formerly titled Défense de la France (“Defense of France”), it was founded as an underground paper during the German occupation of France in World War II, and after the war it emerged as a journal of mass appeal. Renamed France-Soir...
  • Défense des Commerçants et des Artisans, Union de (French organization)
    ...visit of government tax collectors. Expanding his activities to other towns in southern France, he enrolled 800,000 members in his Union de Défense des Commerçants et des Artisans (Union for the Defense of Tradesmen and Artisans). Poujadisme, as his movement was called, succeeded in reducing tax collection drastically in the south of France and resulted in various tax......
  • defense economics
    field of national economic management concerned with the economic effects of military expenditure, the management of economics in wartime, and the management of peacetime military budgets....
  • “Défense et illustration de la langue française, La” (work by Bellay)
    ...de Ronsard of the literary group known as La Pléiade. Du Bellay is the author of the Pléiade’s manifesto, La Défense et illustration de la langue française (The Defence & Illustration of the French Language)....
  • defense industry
    ...
  • Defense Intelligence Agency (United States government)
    The DIA, established in 1961, is the major producer and manager of intelligence for the Department of Defense and is the principal adviser on military intelligence matters for the secretary of defense and the chairman of the Joint Chiefs of Staff. It supplies military intelligence for national reports and estimates, coordinates Department of Defense collection requirements (classified......
  • Defense Mapping Agency (United States government)
    ...Good progress has been made, however, on areas bordering the continents and islands. The Arctic, Antarctic, South Pacific, and South Atlantic oceans are the most deficient in good coverage. The Defense Mapping Agency, through agreement with the British Admiralty and other chart-producing countries, maintains worldwide coverage that is constantly updated. The National Ocean Service......
  • defense mechanism (human psychology)
    in psychoanalytic theory, any of a group of mental processes that enables the mind to reach compromise solutions to conflicts that it is unable to resolve. The process is usually unconscious, and the compromise generally involves concealing from oneself internal drives or feelings that threaten to lower self-esteem or provoke anxiety. The concept derives from the psychoanalytic ...
  • “Defense of Common Sense, A” (essay by Moore)
    ...the forms of idealism and skepticism that were prevalent in England at about the turn of the 20th century, the first major work of common sense philosophy was Moore’s paper A Defense of Common Sense (1925). Against skepticism, Moore argued that he and other human beings have known many propositions about the world to be true with certainty. Among these......
  • Defense of Corinth, The (work by Carter)
    ...were choral and instrumental pieces and a ballet. His Symphony No. 1 dates from 1942, as does an especially representative work of this period, The Defense of Corinth, for narrator, men’s chorus, and two pianos....
  • Defense of Legitimate Rights, Committee for the (Islamist group)
    The regime tried to rely on clerics with whom it had close ties to reign in the dissidents, but to no avail. The kingdom’s first organized Sunni Islamist opposition group, the Committee for the Defense of Legitimate Rights (CDLR), was established in 1993. The committee was not a Western-style human rights organization—as its English-language sobriquet might suggest—but an Isla...
  • Defense of Marriage Act (United States [1996])
    In 1994 Barr ran for the U.S. House of Representatives and defeated the incumbent, six-term Democrat George Darden. As a freshman representative, he sponsored the Defense of Marriage Act (1996), which defined marriage as a legal union between one man and one woman, and he quickly became recognized as one of the most conservative members of the House. Barr later became a senior member of the......
  • “Defense of Poetry, The” (work by Sidney)
    ...suit to give himself instead to the “great cause” of public service. These sonnets, witty and impassioned, brought Elizabethan poetry at once of age. About the same time, he wrote The Defence of Poesie, an urbane and eloquent plea for the social value of imaginative fiction, which remains the finest work of Elizabethan literary criticism. In 1584 he began a radical......
  • Defense of Rights, Associations for the (Turkish history)
    patriotic league formed in Anatolia and in Thrace in 1918, after the defeat of the Ottoman Empire in World War I. Its purposes were to defend Turkey against foreign occupation and to preserve its territorial integrity, and it served as the political instrument of the Turkish struggle for independence (1918–22)....
  • Defense of the English People Against Salmasius (work by Milton)
    ...acknowledged as a reputable scholar, Salmasius posed a formidable challenge to Milton, whose task was to refute his argument. Often imbued with personal invective, Milton’s Defense of the English People Against Salmasius (1651), a Latin tract, fastens on inconsistencies in Salmasius’s argument. Milton echoes much of what he had propounded in earlier tracts...
  • Defense of the Rights of the Albanian Nation, League for the (Balkan history)
    first Albanian nationalist organization. Formed at Prizren, Serbia, on July 1, 1878, the league, initially supported by the Turks, tried to influence the Congress of Berlin, which was formulating a peace settlement following the Russo-Turkish War of 1877–78 and which threatened to partition Albania (then part of the Ottoman Empire) and transfer some of its districts to Mo...
  • Defense of Tradesmen and Artisans, Union for the (French organization)
    ...visit of government tax collectors. Expanding his activities to other towns in southern France, he enrolled 800,000 members in his Union de Défense des Commerçants et des Artisans (Union for the Defense of Tradesmen and Artisans). Poujadisme, as his movement was called, succeeded in reducing tax collection drastically in the south of France and resulted in various tax......
  • Défense, Quartier de la (section, Paris, France)
    In the 1970s the largest concentration of tall buildings in Europe arose some 2 miles (3 km) beyond the arch, on the far side of the suburban wedge of Neuilly-sur-Seine. The quarter, called La Défense, was formerly just a place on the road adjoined by the suburban municipalities of Puteaux, Courbevoie, and Nanterre. Today tall office buildings, heated and air-conditioned from a central......
  • defense reaction (stimulus-response behaviour)
    ...Acutely threatened animals and humans respond to stress with multiple physical changes, including endocrine changes, that prepare them to react or retreat. This process is known as the “fight or flight” response. Endocrine changes associated with this response include increased secretion of cortisol by the adrenal cortex, increased secretion of glucagon by the islet cells of......
  • Defense Supply Agency (United States government)
    Another governmental purchasing sector is the federal military buying establishment, represented in the United States by the Department of Defense, which purchases primarily through the Defense Supply Agency and the army, navy, and air force. The Defense Supply Agency operates six supply centres, which specialize in construction, electronics, fuel, personnel support, and industrial and general......
  • Defense, The (novel by Nabokov)
    His second novel, King, Queen, Knave, which appeared in 1928, marked his turn to a highly stylized form that characterized his art thereafter. His chess novel, The Defense, followed two years later and won him recognition as the best of the younger Russian émigré writers. In the next five years he produced four novels and a novella. Of these, Despair and......
  • Defense, U.S. Department of (United States government)
    ...signals to travel from four or more satellites to its location, calculates the distance to each satellite, and from this calculation determines the user’s longitude, latitude, and altitude. The U.S. Department of Defense originally developed the Navstar constellation for military use, but a less precise form of the service is available free of charge to civilian users around the globe. T...
  • Défenseur de la Constitution, Le (newspaper founded by Robespierre)
    ...Châteauvieux regiment, who had been imprisoned after their mutiny at Nancy. When Brissot’s supporters stirred up opinion against him, Robespierre founded a newspaper, Le Défenseur de la Constitution (“Defense of the Constitution”), which strengthened his hand. He attacked Lafayette, who had become the commander of the French army...
  • Defensio Cartesiana (work by Clauberg)
    Against Lentz and Jacobus Revius, a Dutch Calvinist poet, Clauberg upheld the Cartesian method of pursuing knowledge in his Defensio Cartesiana (1652). He sought again to refute Revius in his Initiatio Philosophi (1655). In Exercitationes Centum de Cognitione Dei et Nostri (1656; “One Hundred Exercises on the Knowledge of God and Ourselves”), he proceeded from......
  • Defensio Fidei Catholicae (work by Suárez)
    At the request of Pope Paul V and others, he wrote apologetic works on the nature of the Christian state. Among them were De Virtute et Statu Religionis (1608–09) and Defensio Fidei Catholicae (1613), opposing Anglican theologians who defended the claim of kings to rule as God’s earthly representatives. This theory, the divine right of kings, was advanced in England at ...
  • Defensio Fidei Catholicae (work by Grotius)
    ...dependent sons, but not free persons, with two exceptions, to act directly for the head of the household. Grotius simply maintained that this rule did not contradict natural law. In another work, Defensio Fidei Catholicae, Grotius added, in a theological context, that the principle of agency is based not on essential natural law but on nonessential natural law; that is, agency is not......
  • Defensio Regia pro Carolo I (work by Salmasius)
    During the English Civil Wars (1642–51) Salmasius was regarded as an ally by Presbyterians and Parliamentarians. At whose instigation he wrote Defensio Regia pro Carolo I (“Defense of the Reign of Charles I”), which was published anonymously in November 1649, is not clear, but it seems certain that Charles II paid for the printing. The work contains, in contradiction to...
  • “Defensiones” (work by Capreolus)
    Dominican scholar whose Four Books of Defenses of the Theology of St. Thomas Aquinas (written 1409–33), generally known as the Defensiones, contributed to a revival of Thomistic theology and won for the author the sobriquet Prince of the Thomists. He began the project while lecturing at the University of Paris, where he later (1411, 1415) took degrees in theology. After some.....
  • defensive behaviour (biology)
    Aggression sometimes occurs when parents defend their young from attack by members of their own species. Female mice, for example, defend their pups against hostile neighbours, while male stickleback fish defend eggs and fry against cannibalistic attack. More frequently, however, animals fight over resources such as food and shelter—e.g., vultures fight over access to carcasses, and......
  • defensive defense (nuclear weapons)
    ...Pact’s follow-on forces in the rear with air strikes. Such aggressive defense was criticized by peace movements as being too provocative. Instead, they proposed nonprovocative strategies based on “defensive defense,” which would lack any capability to go on the offensive. These ideas proved difficult to turn into practice, as any sort of mobile force could move forward, and...
  • defensive tactics (military)
    The last years of the 19th century witnessed the development of automatic weapons in the form of machine guns. Artillery, too, was revolutionized by the addition of recoil mechanisms, which obviated the need to resight the guns after each round and therefore permitted much more rapid fire. As a result the infantry, no longer able to survive the storm of steel sweeping the open terrain, was......
  • Defensor pacis (work by Marsilius)
    Italian political philosopher whose work Defensor pacis (“Defender of the Peace”), one of the most original treatises on political theory produced during the Middle Ages, significantly influenced the modern idea of the state. He has been variously considered a forerunner of the Protestant Reformation and an architect both of the Machiavellian state and of modern democracy....
  • deferent (astronomy)
    ...by postulating three mechanisms: uniformly revolving, off-centre circles called eccentrics; epicycles, little circles whose centres moved uniformly on the circumference of circles of larger radius (deferents); and equants. The equant, however, broke with the main assumption of ancient astronomy because it separated the condition of uniform motion from that of constant distance from the centre.....
  • deferred rebate (shipping)
    ...action on the part of the customers. For example, real estate firms in Europe gave rebates to buyers to encourage land improvements that would increase the value of adjoining unsold land. So-called deferred, or exclusive patronage, rebates are popular for large vendors of perishables, of certain services, and of consumer durable goods. To receive a rebate the purchaser must agree to buy certain...
  • Deffand, Marie de Vichy-Chamrond, marquise du (French author)
    woman of letters and a leading figure in French society....
  • “Déffense et illustration de la langue francoyse, La” (work by Bellay)
    ...de Ronsard of the literary group known as La Pléiade. Du Bellay is the author of the Pléiade’s manifesto, La Défense et illustration de la langue française (The Defence & Illustration of the French Language)....
  • Defferre, Gaston (French politician)
    French politician, Socialist Party leader, and longtime mayor of Marseille (1944–45, 1953–86)....
  • “Défi américain, Le” (work by Servan-Schreiber)
    ...the Algerian War of Independence. The controversial book was later credited with helping turn French public opinion against the Algerian conflict. In Le Défi américain (1967; The American Challenge) he warned against Europe’s becoming merely an economic colony of the United States. An immediate best seller, the work was eventually translated into more than 20....
  • Defiance (Ohio, United States)
    city, seat (1845) of Defiance county, northwestern Ohio, U.S., where the Auglaize and Tiffin rivers meet the Maumee, 55 miles (89 km) southwest of Toledo. Laid out in 1829, Defiance became a market for the farm produce of the Maumee valley and developed industrially after the completion of the Miami and Erie Canal (1845). Manufactures now include truck and automobile parts, roll...
  • Defiant Ones, The (film by Kramer [1958])
    Original Screenplay: Nedrick Young and Harold Jacob Smith for The Defiant OnesAdapted Screenplay: Alan Jay Lerner for GigiCinematography, Black-and-White: Sam Leavitt for The Defiant OnesCinematography, Color: Joseph Ruttenberg for GigiArt Direction: Preston Ames and William A. Horning for......
  • defibrillation, electrical (pathology)
    The use of cardiopulmonary resuscitation (CPR) coupled with electrical defibrillation (the use of electrical shocks), if applied within a few minutes of the sudden death episode, may successfully resuscitate the majority of patients. In coronary care units, where the facilities and trained personnel are immediately available, the percentage of successful resuscitations is high. In general......
  • deficiency disease
    Although deficiency diseases have been described in laboratory animals and humans deprived of single vitamins, in human experience multiple deficiencies are usually present simultaneously. The eight B-complex vitamins function in coordination in numerous enzyme systems and metabolic pathways; thus, a deficiency of one may affect the functioning of others....
  • deficient number (mathematics)
    ...“abundant” or “deficient.” In an abundant number, the sum of its proper divisors (i.e., including 1 but excluding the number itself) is greater than the number; in a deficient number, the sum of its proper divisors is less than the number. A perfect number is an integer that equals the sum of its proper divisors. For example, 24 is abundant, its divisors givin...
  • deficit financing (economics)
    practice in which a government spends more money than it receives as revenue, the difference being made up by borrowing or minting new funds. Although budget deficits may occur for numerous reasons, the term usually refers to a conscious attempt to stimulate the economy by lowering tax rates or increasing government expenditures. The influence of government deficits upon a nati...
  • definite description (philosophy)
    ...a is any individual variable and αあるふぁ is any wff, (ιいおたa)αあるふぁ then stands for the single value of a that makes αあるふぁ true. An expression of the form “the so-and-so” is called a definite description; and (ιいおたx), known as a description operator, can be thought of as forming a name of an individual out of a proposition form. (ιいおたx) is analogous ...
  • definite integral (mathematics)
    The task of analysis is to provide not a computational method but a sound logical foundation for limiting processes. Oddly enough, when it comes to formalizing the integral, the most difficult part is to define the term area. It is easy to define the area of a shape whose edges are straight; for example, the area of a rectangle is just the product of the lengths of two adjoining......
  • definite proportions, law of (chemistry)
    statement that every chemical compound contains fixed and constant proportions (by weight) of its constituent elements. Although many experimenters had long assumed the truth of the principle in general, the French chemist Joseph-Louis Proust first accumulated conclusive evidence for it in a series of researches on the composition of many substances, especially the oxides of iro...
  • Definite Synodical Platform (work by Schmucker)
    ...Lutheran churches in the United States and helped found Gettysburg Seminary (1826; now Lutheran Theological Seminary) and Pennsylvania College (chartered in 1832 as Gettysburg College). In his Definite Synodical Platform (published anonymously in 1855) he reinterpreted the Augsburg Confession in terms of 19th-century liberal theology, Pentecostal piety, and the need for a distinctl...
  • definiteness (grammar)
    The category of definiteness (like English “the”) is marked in numerous ways in the modern languages and originally appears to have been tied to the manner of number marking in Uralic (plural being reflected by indefiniteness). Hungarian alone has a definite article, a(z), a demonstrative in origin; Mordvin has three sets of inflectional endings: indefinite, definite......
  • definition (language and philosophy)
    Definitions, where they occur, can function as additional transformation rules, to the effect that, if in any theorem any expression of the form occurring on one side of a definition is replaced by the corresponding expression of the form occurring on the other side, the result is also to count as a theorem. A proof or derivation of a wff αあるふぁ in an axiomatic system S is a sequence of.....
  • definition by genus and differentia
    ...(Isagoge). The Isagoge, in fact, is only concerned with a simple and rather mechanical treatment of five concepts that had been much used by Aristotle. These were the concepts of genus, or kind (as animal is the genus, or kind, under which Socrates falls); species, or sort (Socrates is a man); differentia, or distinguishing characteristic (rationality distinguishes men from......
  • Definition of Law, The (work by Kantorowicz)
    ...of British Policy and the Myth of the Encirclement of Germany); Dictatorships (1935); Studies in the Glossators of the Roman Law (1938; with William W. Buckland); and The Definition of Law (written 1938, published 1958), in which he elaborated the statement that law is “a body of rules prescribing external conduct and considered justiciable.”...
  • deflagrating explosive (chemical product)
    Basically, chemical explosives are of two types: (1) detonating, or high, explosives and (2) deflagrating, or low, explosives. Detonating explosives, such as TNT and dynamite, are characterized by extremely rapid decomposition and development of high pressure, whereas deflagrating explosives, such as black and smokeless powders, involve merely fast burning and produce relatively low pressures.......
  • deflation (of lungs)
    ...stored within the elastic tissues of the lungs, just as energy is stored in a stretched rubber band. The conversion of this stored, or potential, energy into kinetic, or active, energy during the deflation process supplies part of the force needed for the expulsion of gases. A portion of the energy put into expansion is thus recovered during deflation. The elastic properties of the lungs have.....
  • deflation (geomorphology)
    in geology, erosion by wind of loose material from flat areas of dry, uncemented sediments such as those occurring in deserts, dry lake beds, floodplains, and glacial outwash plains. Clay and silt-sized particles are picked up by turbulent eddies in wind and may be carried for hundreds of kilometres; they later settle to form loess deposits. Local areas subjected to deflation ma...
  • deflation (economics)
    ...result in growth responses in the complementary sectors. The relation of inflation to economic growth and investment is an important though difficult problem. There seems to be little doubt that deflation, mainly because it shifts the distribution of income away from the profit maker toward the rentier and bondholder, has a deleterious effect on investment and the growth of capital.......
  • deflation hollow (geology)
    ...particles are picked up by turbulent eddies in wind and may be carried for hundreds of kilometres; they later settle to form loess deposits. Local areas subjected to deflation may result in deflation hollows or blowouts. These may range from 3 m (10 feet) in diameter and less than a metre deep to several kilometres in diameter and several hundred metres in depth. The Big Hollow in......
  • deflationary policy (economics)
    ...shift in the pattern of world trade), even if domestic demand is not above the supply potential and prices are not rising. In this case, policies designed to reduce domestic demand (commonly called deflationary policies) would cause unemployment. Some hold that, if there is an external deficit, deflationary policies should be pursued to whatever extent may be needed to eliminate the deficit.......
  • deflected-thrust aircraft (aeronautics)
    The second group, convertible airplanes with propellers, has four basic configurations. The first of these are the deflected thrust type, in which large propellers exert thrust against a wing deflected into a broad arc. The second type is the tilt wing. In these aircraft, the wing is rotated to point the propellers vertically for takeoff and landing, then adjusted for horizontal flight by......
  • deflection coil
    Scanning is accomplished by two sets of electromagnet coils. These coils must be precisely designed to preserve the focus of the scanning spot no matter where it falls on the screen, and the magnetic fields they produce must be so distributed that deflections occur at uniform velocities....
  • deflection of the vertical (geodesy)
    ...surfaces, ellipsoid and geoid, are shown in the figure. The local direction of gravity is normal to the geoid, and the angle between this direction and the normal to the ellipsoid is known as the deflection of the vertical....
  • deflection theory (engineering)
    ...steel towers spread laterally at the base, and a 7.4-metre- (24.5-foot-) deep truss is used for the deck. Of greater significance than the deck construction, however, was the first application of deflection theory, during the design of these two bridges, in calculating how the horizontal deck and curved cables worked together to carry loads. First published in 1888 by the Austrian academic......
  • deflection yoke (electronics)
    A similar action in the vertical deflection coils produces the vertical scanning motion. The two sets of deflection coils are combined in a structure known as the deflection yoke, which surrounds the neck of the picture tube at the junction of the neck with the funnel section....
  • defoamer (chemistry)
    One problem with specialty additives is that they often have a surfactant nature and consequently stabilize foam in the liquid coating. Portions of the coating polymer also have a surfactant nature, and they, too, contribute to foam stability. Foam often causes problems during manufacture and packaging, and during application it often causes film defects such as bubbles and subsequent thin......
  • Defoe, Daniel (English author)
    English novelist, pamphleteer, and journalist, author of Robinson Crusoe (1719–22) and Moll Flanders (1722)....
  • Defoid languages
    The Defoid languages comprise two groups: the Akokoid cluster of four languages and the very much larger Yoruboid cluster whose principal members are Yoruba (20,000,000 speakers), Igala (1,000,000), and Itsekiri (Itsεいぷしろんkiri; 600,000). Yoruba is the Niger-Congo language with the largest number of mother-tongue speakers. Though Swahili has a greater total number of speakers—some......
  • defoliant (chemistry)
    a chemical dust or spray applied to plants to cause their leaves to drop off prematurely. Defoliants sometimes are applied to crop plants such as cotton in order to facilitate harvesting. They are also used in warfare to eliminate enemy food crops and potential areas of concealment by enemy forces. Defoliants were employed for these purposes by South Vietnamese and U.S. forces in the Vie...
  • defoliation (botany)
    Woodrats are usually common within their ranges, but Allegheny woodrat populations are declining, possibly because of forest defoliation by gypsy moths and infestation by parasites. Two species endemic to islands in the Gulf of California—N. anthonyi of the Todos Santos Islands and N. bunkeri of Isla Coronados—are probably extinct owing to the depletion....
  • deforcement (English law)
    in English property law, wrongful taking and possession of land belonging to another. Deforcement had its primary legal significance in feudal England. Deforcement arose particularly in cases in which land possessed by a tenant escheated (was forfeited) to his lord (either for reason of the tenant’s wrongful act against the manor or for nonpayment of rent due the lord), in which the occurr...
  • DeForest, John William (American writer)
    American writer of realistic fiction, author of a major novel of the American Civil War—Miss Ravenel’s Conversion from Secession to Loyalty (1867)....
  • deforestation
    the clearing or thinning of forests, the cause of which is normally implied to be human activity. As such, deforestation represents one of the largest issues in global land use in the early 21st century. Estimates of deforestation traditionally are based on the area of forest cleared for human use, including removal of the trees for wood products and for croplands and grazing la...
  • deformable media, mechanics of (physics)
    ...forces, which represent the mechanical effect of matter immediately adjoining that along the surface S of the volume V being considered. Cauchy formalized in 1822 a basic assumption of continuum mechanics that such surface forces could be represented as a stress vector T, defined so that TdS is an element of force acting over the area......
  • deformation (mathematics)
    branch of mathematics, sometimes referred to as “rubber sheet geometry,” in which two objects are considered equivalent if they can be continuously deformed into one another through such motions in space as bending, twisting, stretching, and shrinking while disallowing tearing apart or gluing together parts. The main topics of interest in topology are the properties that remain......
  • deformation (mechanics)
    in physics, alteration in shape or size of a body under the influence of mechanical forces. Flow is a change in deformation that continues as long as the force is applied....
  • deformation, modulus of
    ...the underground powerhouse and was stabilized by large tendons anchored back in a drainage tunnel plus strut action provided by the concrete structure that supported the generator machinery. The modulus of deformation (that is, the stiffness of the rock) is significant in problems involving movement under stress and in sharing of load between rock and structure, as in a tunnel lining,......
  • deformation, ritual
    intentional permanent or semipermanent alterations of the living human body for reasons such as ritual, folk medicine, aesthetics, or corporal punishment. In general, voluntary changes are considered to be modifications, and involuntary changes are considered mutilations. Common methods that have been used are incision, perforation, complete or partial removal, cautery, abrasion...
  • deformational fabric (geology)
    ...thereof, of the crystals or grains that make up a sedimentary rock constitutes one aspect of fabric. Genetically, there are two principal varieties of oriented fabrics: primary (or depositional) and secondary (or deformational). Primary fabrics are produced while the sediment is accumulating. For example, river currents and some submarine gravity flows generate sediments whose flaky and......
  • deformed nucleus (physics)
    Nucleons can interact with one another in a collective fashion to deform the nuclear shape to a cigar shape. Such large spheroidal distortions are usual for nuclei far from magic, notably with 150 ≲ A ≲ 190, and 224 ≲ A (the symbol < denotes less than, and ∼ means that the number is approximate). In these deformed regions the collective model prescr...
  • deforming spondylitis (pathology)
    inflammation of one or more of the vertebrae. Spondylitis takes several forms; the most widely occurring forms are ankylosing spondylitis, hypertrophic spondylitis, and tuberculous spondylitis....
  • deformity, physical (biology)
    in biology, irregular or abnormal structural development. Malformations occur in both plants and animals and have a number of causes....
  • Defying the Crowd (book by Sternberg and Lubart)
    A third crucial characteristic combines curiosity and problem seeking. Creative individuals seem to have a need to seek novelty and an ability to pose unique questions. In Defying the Crowd (1995), for example, the American psychologists Robert Sternberg and Todd Lubart likened the combined traits of autonomy and problem solving to buying low and selling high in the......
  • Deg Hit’an (people)
    Athabaskan-speaking North American Indian tribe of interior Alaska, in the basins of the upper Kuskokwim and lower Yukon rivers. Their region is mountainous, with both woodlands and tundra, and is fairly rich in fish, caribou, bear, moose, and other game on which the Deg Xinag traditionally subsisted—fish, fresh or dried, being central to their diet. Before colonization, Deg Xinag and ...
  • Deg Xinag (people)
    Athabaskan-speaking North American Indian tribe of interior Alaska, in the basins of the upper Kuskokwim and lower Yukon rivers. Their region is mountainous, with both woodlands and tundra, and is fairly rich in fish, caribou, bear, moose, and other game on which the Deg Xinag traditionally subsisted—fish, fresh or dried, being central to their diet. Before colonization, Deg Xinag and ...
  • Deganya (kibbutz, Israel)
    ...rule, working there in a number of settlements. He fought as a member of the Jewish Legion on the side of the British forces against the Turks. At the end of his service in 1920, Eshkol helped found Deganya Bet, one of the first kibbutzim in Palestine. Thereafter he worked untiringly for the future Israeli state. He was one of the founders of Histadrut (General Federation of Labour) and was......
  • Deganya Bet (kibbutz, Israel)
    ...rule, working there in a number of settlements. He fought as a member of the Jewish Legion on the side of the British forces against the Turks. At the end of his service in 1920, Eshkol helped found Deganya Bet, one of the first kibbutzim in Palestine. Thereafter he worked untiringly for the future Israeli state. He was one of the founders of Histadrut (General Federation of Labour) and was......
  • Degas, Edgar (French artist)
    French painter, sculptor, and printmaker who was prominent in the Impressionist group and widely celebrated for his images of Parisian life. Degas’s principal subject was the human—especially the female—figure, which he explored in works ranging from the sombre portraits of his early years to the studies of laundresses, cabaret singers, milliners, and prosti...
  • Degas, Hilaire-Germain-Edgar (French artist)
    French painter, sculptor, and printmaker who was prominent in the Impressionist group and widely celebrated for his images of Parisian life. Degas’s principal subject was the human—especially the female—figure, which he explored in works ranging from the sombre portraits of his early years to the studies of laundresses, cabaret singers, milliners, and prosti...
  • degassing (Earth science)
    ...uncertain. It is likely that the hydrosphere attained its present volume early in the Earth’s history, and since that time there have been only small losses and gains. Gains would be from continuous degassing of the Earth; the present degassing rate of juvenile water has been determined as being only 0.3 cubic kilometre per year. Water loss in the upper atmosphere is by photodissociation...
  • Degema (Nigeria)
    town and river port, Rivers state, southern Nigeria, on the Sambreiro River (an outlet of the Niger). A traditional market centre (fish, cassava, taro, palm produce, plantains, and yams) of the Ijo (Ijaw) people, it became a major exporter of palm oil and kernels after the decline of the slave trade in the early 19th century. The Degema-Abon...
  • degeneracy (physics)
    ...a given shell in the hydrogen atom have the same energy despite having different shapes is surprising and is associated with a cancellation of different contributions to the energy. (This so-called degeneracy, the possession of the same energy by different wavefunctions, is also associated with the coincidental numerical agreement of Bohr’s model with experiment.) As soon as a second ele...
  • degenerate art (art exhibition)
    term used by the Nazi Party in Germany to describe art that did not support the ideals of National Socialism. It was also the title of a propagandistically designed Nazi exhibition of modern art held in Munich in 1937....
  • degenerate gas (physics)
    in physics, a particular configuration, usually reached at high densities, of a gas composed of subatomic particles with half-integral intrinsic angular momentum (spin). Such particles are called fermions, because their microscopic behaviour is regulated by a set of quantum mechanical rules—Fermi-Dirac statistics. These rules state, in particular, that...
  • degenerative joint disease (pathology)
    disorder of the joints characterized by progressive deterioration of the articular cartilage. It is the most common joint disease, affecting more than 80 percent of those who reach the age of 70. Although its suffix indicates otherwise, osteoarthritis is not characterized by excessive joint inflammation as is the case with rheumatoid arthritis...
  • DeGeneres, Ellen (American actress and comedienne)
    One of the most eagerly awaited events on television during the 1996-97 season was an episode of the sitcom "Ellen," in which the title character, portrayed by comedian Ellen DeGeneres, would reveal her sexuality. The groundbreaking story line came at the end of a long series of innuendo-riddled trailers and interviews and articles that speculated that both "Ellens" were gay. During that particula...
  • Degeneria (plant genus)
    ...with an elongated aperture and a homogenous (structureless) exine, and sterile stamens (staminodes) between the fertile stamens and the central single carpel. The unusual kidney-shaped fruits of Degeneria measure up to 12 cm (almost 5 inches) long; they split open along one side to reveal orange or red seeds embedded in a pulp. The seeds hang down from the open fruit and are dispersed by...
  • Degeneria roseiflora (plant)
    ...on Viti Levu, the largest island of the Fijian archipelago. It is a relatively common tree that occurs mostly in upland forests on steep slopes, and it has been used for timber. A second species, D. roseiflora, was described in 1988 on different Fijian islands—namely, Vanua Levu and Taveuni. It is also a fairly common timber tree that differs from the first species in having magen...
  • Degeneria vitiensis (plant)
    Degeneriaceae consists of one genus in Fiji. Degeneria vitiensis, as the species name indicates, was found on Viti Levu, the largest island of the Fijian archipelago. It is a relatively common tree that occurs mostly in upland forests on steep slopes, and it has been used for timber. A second species, D. roseiflora, was described in 1988 on different Fijian islands—namely,......
  • Degeneriaceae (plant family)
    The two species in Degeneriaceae (Degeneria vitiensis and D. roseiflora) are large trees and have primitive vessels, single pollen grains with an elongated aperture and a homogenous (structureless) exine, and sterile stamens (staminodes) between the fertile stamens and the central single carpel. The unusual kidney-shaped fruits of Degeneria measure up to 12 cm (almost 5......
  • Deggendorf (Germany)
    city, Bavaria Land (state), southeastern Germany. It is on the Danube River, 2.5 miles (4 km) above its confluence with the Isar River. Deggendorf lies at the western foot of the Bavarian and Bohemian forests, east of Straubing. Founded about 750,...
d