- aerial skiing (sport)
skiing: Freestyle skiing: …1950 that such stunts (aerials) were popularized by Norwegian Stein Eriksen, who won a gold medal in the giant slalom at the 1952 Winter Games in Oslo. There are two varieties of aerials: upright and inverted. Flips or any movements where a competitor’s feet are higher than his head…
- aerial warfare
air warfare, the tactics of military operations and armed forces conducted by airplanes, helicopters, or other manned craft that are propelled aloft. Air warfare may be conducted against other aircraft, against targets on the ground, and against targets on the water or beneath it. Air warfare is
- aerialist (performer)
circus: Acts of skill: …in the work of the aerial gymnast and acrobat. By the turn of the 20th century, acrobatic acts had grown in popularity, although they never usurped the supreme position of the horse in the circus.
- aero-otitis (physiology)
ear squeeze, effects of a difference in pressure between the internal ear spaces and the external ear canal. These effects may include severe pain, inflammation, bleeding, and rupture of the eardrum membrane. Underwater divers and airplane pilots are sometimes affected. The middle ear, the cavity
- aero-otitis media (physiology)
ear squeeze, effects of a difference in pressure between the internal ear spaces and the external ear canal. These effects may include severe pain, inflammation, bleeding, and rupture of the eardrum membrane. Underwater divers and airplane pilots are sometimes affected. The middle ear, the cavity
- aeroacoustics (physics)
Sir James Lighthill: …which created the field of aeroacoustics and contained the formula that the sound generated by a jet aircraft increases in proportion to the eighth power of its speed. Aeroacoustics was so new that Lighthill’s paper contained no references. Lighthill’s work was later applied in reducing the noise of jet engines.
- aerobatic box (aviation)
aerobatics: Modern aerobatic competition formats: …their sequences in the “aerobatic box,” an imaginary cube of airspace whose sides measure 1,000 metres (3,300 feet), with a minimum lower safety limit below which pilots may not fly. Penalties are imposed for flying outside or below these limits. A pilot is expected to perform each sequence correctly,…
- aerobatics (sport)
aerobatics, maneuvers in which an aircraft is flown under precise control in unusual attitudes (the position of an aircraft determined by the relationship between its axes and a reference such as the horizon). A myriad of aerobatic maneuvers exist, some of the better-known being rolls, loops, stall
- aerobe (microbiology)
aerobe, an organism able to live and reproduce only in the presence of free oxygen (e.g., certain bacteria and certain yeasts). Organisms that grow in the absence of free oxygen are termed anaerobes; those that grow only in the absence of oxygen are obligate, or strict, anaerobes. Some species,
- Aerobee (United States rocket)
James A. Van Allen: …in the development of the Aerobee, one of the first rockets built for research purposes.
- aerobic dancing (exercise)
aerobics, system of physical conditioning that increases the efficiency of the body’s intake of oxygen, thereby stimulating the cardiovascular system, developing endurance, and reducing body fat. Increased energy, lower blood pressure and cholesterol, greater suppleness, stronger bones, better
- aerobic exercise (exercise)
aerobics, system of physical conditioning that increases the efficiency of the body’s intake of oxygen, thereby stimulating the cardiovascular system, developing endurance, and reducing body fat. Increased energy, lower blood pressure and cholesterol, greater suppleness, stronger bones, better
- aerobic oxidation (biology)
life: ATP: Aerobic oxidation of glucose requires an additional 60 enzyme-catalyzed steps. The anaerobic breakdown of glucose uses enzymes suspended freely in solution in the cells. The aerobic steps occur on enzymes localized in mitochondria, the “power packs” of cells where oxygen gas is used to make…
- aerobic respiration (biology)
bacteria: Heterotrophic metabolism: …most familiar respiratory process (aerobic respiration) uses oxygen as the final electron acceptor. The sugar is completely broken down to carbon dioxide and water, yielding a maximum of 38 molecules of ATP per molecule of glucose. Electrons are transferred to oxygen using the electron transport chain, a system of…
- aerobic scope (biology)
human respiratory system: Interplay of respiration, circulation, and metabolism: …maximal exercise is called the aerobic scope. The upper limit to oxygen consumption is not conferred by the ability of muscles to do work, but rather by the limited ability of the respiratory system to provide or utilize oxygen at a higher rate. Muscle can do more work, but beyond…
- aerobics (exercise)
aerobics, system of physical conditioning that increases the efficiency of the body’s intake of oxygen, thereby stimulating the cardiovascular system, developing endurance, and reducing body fat. Increased energy, lower blood pressure and cholesterol, greater suppleness, stronger bones, better
- aerobraking (space exploration)
Mars Global Surveyor: …employed a technique known as aerobraking—using the drag of the Martian upper atmosphere on the spacecraft to slow it down gradually—to achieve a final 400-km (250-mile) circular polar orbit in which it circled Mars 12 times a day. This orbital configuration allowed the spacecraft to collect data from the entire…
- aerodontalgia (pathology)
tooth squeeze, pain caused by the expansion or contraction of air beneath the filling of a tooth when pressure within the mouth cavity is increased or decreased. Aircraft pilots and underwater divers are common victims of tooth squeeze, as the pressures that they experience vary widely from the
- aerodrome
airport, site and installation for the takeoff and landing of aircraft. An airport usually has paved runways and maintenance facilities and serves as a terminal for passengers and cargo. The requirements for airports have increased in complexity and scale since the earliest days of flying. Before
- Aerodrome, The (novel by Warner)
English literature: The 1930s: …of Rex Warner, of which The Aerodrome (1941) is the most accomplished, owed much to Franz Kafka; and the complex and often obscure poetry of David Gascoyne and Dylan Thomas owed much to the Surrealists. Even so, Yeats’s mature poetry and Eliot’s Waste Land, with its parodies, its satirical edge,…
- aerodynamic ground-effect machine (vehicle)
air-cushion machine: … (ACVs); the latter are called aerodynamic ground-effect machines (GEMs).
- aerodynamic lift (physics)
lift, upward-acting force on an aircraft wing or airfoil. An aircraft in flight experiences an upward lift force, as well as the thrust of the engine, the force of its own weight, and a drag force. The lift force arises because there is a zone of low air pressure on the top of the airfoil and a
- aerodynamics (fluid mechanics)
aerodynamics, branch of physics that deals with the motion of air and other gaseous fluids and with the forces acting on bodies passing through such a fluid. Aerodynamics seeks, in particular, to explain the principles governing the flight of aircraft, rockets, and missiles. It is also concerned
- Aeroflot (Russian airline)
Aeroflot, Russian airline that was formerly the national airline of the Soviet Union. The Soviet state airline was founded in 1928 under the name Dobroflot and was reorganized under the name Aeroflot in 1932. Dobroflot, or Dobrovolny Flot, grew out of two former airlines: Dobrolyot, founded in
- Aeroflot-Russian Airlines (Russian airline)
Aeroflot, Russian airline that was formerly the national airline of the Soviet Union. The Soviet state airline was founded in 1928 under the name Dobroflot and was reorganized under the name Aeroflot in 1932. Dobroflot, or Dobrovolny Flot, grew out of two former airlines: Dobrolyot, founded in
- Aeroflot-Russian International Airlines (Russian airline)
Aeroflot, Russian airline that was formerly the national airline of the Soviet Union. The Soviet state airline was founded in 1928 under the name Dobroflot and was reorganized under the name Aeroflot in 1932. Dobroflot, or Dobrovolny Flot, grew out of two former airlines: Dobrolyot, founded in
- aerofoil (aircraft part)
airfoil, shaped surface, such as an airplane wing, tail, or propeller blade, that produces lift and drag when moved through the air. An airfoil produces a lifting force that acts at right angles to the airstream and a dragging force that acts in the same direction as the airstream. High-speed
- aerogel (synthetic material)
comet: Spacecraft exploration of comets: …made of silica (sand) called aerogel that had a very low density, approaching that of air. The idea was that the aerogel would slow the dust particles without destroying them, much as a detective might shoot a bullet into a box full of cotton in order to collect the undamaged…
- aerogram (postal service)
postal system: Development of airmail: …of airmail remains the compact aerogram, which was introduced in Britain during World War II as a convenient way of writing to overseas military personnel. It consists of a sheet of lightweight paper suitably folded and gummed on all sides. Recognized by the UPU, the aerogram is available in most…
- aerolite (astronomy)
stony meteorite, any meteorite consisting largely of rock-forming (silicate) minerals. Stony meteorites, which are the most abundant kind of meteorite, are divided into two groups: chondrites and achondrites. Chondrites are physically and chemically the most primitive meteorites in the solar
- aerolith (astronomy)
stony meteorite, any meteorite consisting largely of rock-forming (silicate) minerals. Stony meteorites, which are the most abundant kind of meteorite, are divided into two groups: chondrites and achondrites. Chondrites are physically and chemically the most primitive meteorites in the solar
- aeromancy (occult practice)
augury: …ritual, were atmospheric phenomena (aeromancy), cards (cartomancy), dice or lots (cleromancy), dots and other marks on paper (geomancy), fire and smoke (pyromancy), the shoulder blades of animals (scapulimancy), entrails of sacrificed animals (haruspicy), or their livers, which were considered to be the seat of life
- Aeronautes saxatalis (bird)
swift: The white-throated swift (Aeronautes saxatalis), soft-tailed and black with white markings, breeds in western North America and winters in southern Central America, nesting on vertical rock cliffs.
- Aeronautical Battalion (Italian aviation unit)
Giulio Douhet: …served as commander of the Aeronautical Battalion, Italy’s first aviation unit (also the first to practice aerial bombardment, in Libya during Italy’s war with Turkey, 1911–12). Largely because of his efforts, the three-engine Caproni bomber was ready for use by the time Italy entered World War I. He soon grasped…
- aeronautical chart (navigation)
map: Aeronautical charts provide essential data for the pilot and air navigator. They are, in effect, small-scale topographic maps on which current information on aids to navigation have been superimposed. To facilitate rapid recognition and orientation, principal features of the land that would be visible from…
- Aeronautical Chart Service (United States Air Force)
map: The rise of national surveys: …of the Oceanographic Office (Navy), Aeronautical Chart Service (Air Force), and the U.S. Army Topographic command.
- aeronautical engineering
aerospace engineering, field of engineering concerned with the design, development, construction, testing, and operation of vehicles operating in the Earth’s atmosphere or in outer space. In 1958 the first definition of aerospace engineering appeared, considering the Earth’s atmosphere and the
- aeronautical public correspondence system
mobile telephone: Airborne cellular systems: …known by the generic name aeronautical public correspondence (APC) systems, are of two types: terrestrial-based, in which telephone calls are placed directly from an aircraft to an en route ground station; and satellite-based, in which telephone calls are relayed via satellite to a ground station. In the United States the…
- Aeronauts, The (film by Harper [2019])
Eddie Redmayne: The Danish Girl, Fantastic Beasts, and The Day of the Jackal: …appeared as a meteorologist in The Aeronauts, an action-adventure film based on an actual balloon expedition in 1862.
- Aeronian Stage (geology and stratigraphy)
Aeronian Stage, second of three stages of the Llandovery Series, encompassing all rocks deposited during the Aeronian Age (440.8 million to 438.5 million years ago) of the Silurian Period. The name of the interval is derived from the Cemcoed-Aeron Farm near Llandovery, Powys, Wales. In 1984 the
- aeronomy (atmospheric science)
aeronomy, study of the physics and chemistry of the upper atmosphere, including the distribution of temperature, density, and chemical constituents, and the chemical reactions that occur. Studies of aurora, airglow, the ionosphere, Van Allen radiation belts, cosmic rays, and radiative and
- Aeronomy of Ice in the Mesosphere (United States satellite)
AIM, U.S. satellite designed to study noctilucent clouds. AIM was launched on April 25, 2007, by a Pegasus XL rocket that was dropped from an airplane. Noctilucent clouds are faint ice-bearing clouds that form at a height of about 80 km (50 miles) in the layer of the atmosphere called the
- aerophone (musical instrument)
aerophone, any of a class of musical instruments in which a vibrating mass of air produces the initial sound. The basic types include woodwind, brass, and free-reed instruments, as well as instruments that fall into none of these groups, such as the bull-roarer and the siren. Bagpipes and organs
- aeroplane (aircraft)
airplane, any of a class of fixed-wing aircraft that is heavier than air, propelled by a screw propeller or a high-velocity jet, and supported by the dynamic reaction of the air against its wings. For an account of the development of the airplane and the advent of civil aviation see history of
- aeroponics (agriculture)
vertical farming: Systems and crops: Aeroponic systems, developed by NASA in the 1990s, grow plants in an air or mist environment.
- aeropyle (zoology)
Lepidoptera: Egg: …is carried on through an aeropyle, a system of air passages in the shell (chorion) that enables oxygen exchange with the environment to occur whether the egg is dry or wet. In a few species of scavenger moths and pierid butterflies (see white and sulfur butterflies), the larvae hatch in…
- aerosinusitis (pathology)
sinus squeeze, pain, inflammation, and possible bleeding of the membranes lining the sinus cavities in the head, caused by a difference between the pressure inside the sinuses and that outside. Sinus squeeze is a common malady of persons flying in unpressurized aircraft and of divers. The sinuses,
- Aerosmith (American rock group)
Aerosmith, American heavy metal band. One of the biggest arena-rock attractions of the late 1970s, Aerosmith became even more popular with its career revival in the mid-1980s. Principal members were lead singer Steven Tyler (byname of Steven Tallarico; b. March 26, 1948, New York, New York, U.S.),
- aerosol (physics)
aerosol, a system of liquid or solid particles uniformly distributed in a finely divided state through a gas, usually air. Aerosol particles, such as dust, play an important role in the precipitation process, providing the nuclei upon which condensation and freezing take place. They affect climate
- aerosol art (art)
graffiti, form of visual communication, usually illegal, involving the unauthorized marking of public space by an individual or group. Although the common image of graffiti is a stylistic symbol or phrase spray-painted on a wall by a member of a street gang, some graffiti is not gang-related.
- aerosol container
aerosol container, any package, usually a metal can or plastic bottle, designed to dispense its liquid contents as a mist or foam. This type of container was developed in 1941 by the American chemist Lyle D. Goodhue and others for dispensing insecticides. Since that time a wide variety of products
- Aerosol Polarimetry Sensor (instrument)
Glory: …two main science instruments: the Aerosol Polarimetry Sensor (APS) and the Total Irradiance Monitor (TIM). The APS would have used the polarization of light caused by the presence of aerosols such as soot and sulfates, which contribute to global warming, to measure their geographic distribution. The TIM would have used…
- aerospace engineering
aerospace engineering, field of engineering concerned with the design, development, construction, testing, and operation of vehicles operating in the Earth’s atmosphere or in outer space. In 1958 the first definition of aerospace engineering appeared, considering the Earth’s atmosphere and the
- Aerospace Industries Association of America (American organization)
aerospace industry: Character of the industry: …industry are represented through the Aerospace Industries Association of America (AIA), an aerospace-industry-funded organization whose membership consists of the major companies in the field. The AIA provides a forum for technical and policy issues concerning the industry and serves as a lobbying agent for the common interests of its members.…
- aerospace industry
aerospace industry, assemblage of manufacturing concerns that deal with vehicular flight within and beyond Earth’s atmosphere. (The term aerospace is derived from the words aeronautics and spaceflight.) The aerospace industry is engaged in the research, development, and manufacture of flight
- aerospace medicine
aerospace medicine, specialized branch of medical science concerned with those medical problems encountered in human flight in the atmosphere (aviation medicine) and beyond the atmosphere (space medicine). The ultimate aim of this specialty is to promote the safety and effectiveness of humans while
- aerospace telemetry (communications)
telemetry: Aerospace telemetry dates from the 1930s, with the development of the balloon-borne radiosonde, a device that automatically measures such meteorological data as temperature, barometric pressure, and humidity and that sends the information to an Earth station by radio. Aerospace telemetry for rockets and satellites was…
- Aerospatiale (French company)
Airbus Industrie: …the funding came from France’s Aerospatiale (later Aerospatiale Matra), created by the merger of Sud Aviation with Nord Aviation and the French missile maker SEREB, and 50 percent came from Germany’s Deutsche Airbus (later DaimlerChrysler Aerospace Airbus), a joint venture in which Messerschmitt-Bölkow-Blohm had a 65 percent stake and VFW-Fokker…
- Aerospatiale Matra (French company)
Airbus Industrie: …the funding came from France’s Aerospatiale (later Aerospatiale Matra), created by the merger of Sud Aviation with Nord Aviation and the French missile maker SEREB, and 50 percent came from Germany’s Deutsche Airbus (later DaimlerChrysler Aerospace Airbus), a joint venture in which Messerschmitt-Bölkow-Blohm had a 65 percent stake and VFW-Fokker…
- Aérospatiale SE 210 Caravelle (aircraft)
history of flight: The airlines reequip: …Sud-Est (later Aérospatiale) SE 210 Caravelle, a medium-range turbojet intended primarily for the continental European market. First flown on May 27, 1955, the Caravelle achieved sales of 282 aircraft, and a turbofan-powered variant was used for domestic routes by airlines in the United States—a marketing coup at the time. The…
- aerostatic craft
air-cushion machine: The former are classed as aerostatic craft (ACVs); the latter are called aerodynamic ground-effect machines (GEMs).
- aerostatics (physics)
Albert Of Saxony: …what is now known as aerostatics, as he maintained that a light balloon would rise and remain suspended in the air if a particle of fire were enclosed in it. Finally, his search for mathematical formulas to express laws of nature foreshadowed the usage of modern physics.
- Aérostier (French military group)
military aircraft: Early history: …and a company of “Aérostiers” was formed on April 2, 1794. Two months later the first military reconnaissance from such a balloon was made before the city of Maubeuge. Until the Aérostiers were disbanded in 1799, their reports contributed to the success of French armies in many battles and…
- aerotitis (physiology)
ear squeeze, effects of a difference in pressure between the internal ear spaces and the external ear canal. These effects may include severe pain, inflammation, bleeding, and rupture of the eardrum membrane. Underwater divers and airplane pilots are sometimes affected. The middle ear, the cavity
- Aerotrain
air-cushion machine: Air-cushion trains: Once air-cushion suspension was proved practical in Hovercraft, the system was quickly applied to other forms of transport, and it soon became clear that a tracked vehicle, similar to a train or monorail, would benefit considerably from the lack of friction inherent in…
- Aerschot, Philip de Croy, duke of (Dutch political leader)
Jan van Hembyze: …Philip de Croy, duke of Aerschot, the stadholder of Flanders, as well as Ghent’s several Catholic magistrates, and replaced them with 18 Calvinists, with himself as mayor. Encouraged by Hembyze, the Calvinist townspeople pillaged churches, destroyed religious statues, and burned six monks to death. William I, prince of Orange, the…
- AES (cryptology)
AES, a data encryption standard endorsed by the U.S. National Institute of Standards and Technology (NIST) as a replacement for the Data Encryption Standard (DES). AES offers far greater security than DES for communications and commercial transactions over the Internet. In January 1997 NIST issued
- AES (physics)
surface analysis: Auger electron spectroscopy: Energies of Auger electrons (named after French physicist Pierre Auger), like energies of XPS photoelectrons, are characteristic of the individual chemical elements. Thus, it is possible to use AES to analyze surfaces in much the same way as XPS is used. However,…
- aes grave (Roman coin)
coin: The beginnings: It consisted of aes grave, large circular cast coins of bronze all bearing marks of value, from the as (weighing one pound) down to its 12th, the uncia; the obverses showed the head of a deity, the reverses a ship’s prow. These were paralleled at mints elsewhere by…
- aes rude (Roman coin)
coin: The beginnings: …unworked lumps of bronze (aes rude) were certainly used as a metal currency from the 6th century, if not much earlier, perhaps in rare conjunction with very small quantities of unworked gold and silver, themselves also passing by weight. Simultaneously, standards of value appear to have been expressed in…
- aes signatum (Roman coin)
coin: The beginnings: …yet produce true coins but aes signatum, bronze bars (of about six pounds) lacking a mark of value but bearing on each side a clearly recognizable type (including cattle) and perhaps equivalent in value to a Greek silver didrachm.
- Aeschbacher, Hans (Swiss sculptor)
Hans Aeschbacher was a Swiss sculptor of severe and massive abstract forms. Trained as a printer, Aeschbacher taught himself to draw and paint and began sculpting about age 30. His earliest pieces were figurative and were composed mainly from terra-cotta and plaster. By 1945 he was working
- Aeschines (Greek orator)
Aeschines was an Athenian orator who advocated peace with Philip II of Macedonia and who was a bitter political opponent of the statesman Demosthenes. Aeschines was brought up in humble circumstances, and in the early part of his career he worked as a tragic actor and held minor posts in the state
- Aeschines of Sphettus (Greek orator)
Aeschines was an Athenian orator who advocated peace with Philip II of Macedonia and who was a bitter political opponent of the statesman Demosthenes. Aeschines was brought up in humble circumstances, and in the early part of his career he worked as a tragic actor and held minor posts in the state
- Aeschronectida (crustacean)
crustacean: Annotated classification: Aeschronectida Carboniferous. Subclass Eumalacostraca Late Devonian to Holocene; carapace (when present) not bivalved; rostrum fixed; first antenna 2-branched; thoracic legs with slender, many-segmented outer branch and stout, 7-segmented inner branch, often pincerlike, used in walking or food-gathering; 6 (rarely 7) abdominal segments, with
- Aeschylus (work by Bentley)
clerihew: …rhyme, as in Bentley’s “Aeschylus”:
- Aeschylus (Greek dramatist)
Aeschylus was the first of classical Athens’ great dramatists, who raised the emerging art of tragedy to great heights of poetry and theatrical power. Aeschylus grew up in the turbulent period when the Athenian democracy, having thrown off its tyranny (the absolute rule of one man), had to prove
- Aesculapian snake (reptile)
rat snake: The Aesculapian snake (E. longissima), plain and dark coloured, is native to southeastern Europe and Asia Minor. In ancient times it was sacred to Aesclepius, god of medicine; the present isolated populations in Germany and Switzerland are descended from specimens conveyed to health resorts there by…
- Aesculapius (Greco-Roman god)
Asclepius, Greco-Roman god of medicine, son of Apollo (god of healing, truth, and prophecy) and the mortal princess Coronis. The Centaur Chiron taught him the art of healing. At length Zeus (the king of the gods), afraid that Asclepius might render all men immortal, slew him with a thunderbolt.
- Aesculus (plant genus)
Sapindales: Distribution and abundance: Aesculus (horse chestnuts and buckeyes), with about 13 deciduous species, has an interrupted distribution in temperate forests from western and eastern North America (seven species) to the Balkan Peninsula in Europe (one species) and in Asia from India to China and Japan (five species). The…
- Aesculus californica (plant)
buckeye: Species: The California buckeye (A. californica) is endemic to California and southwestern Oregon and features sweetly scented white-to-pink flowers. At least two other possible buckeye species are known, though their taxonomy is contentious.
- Aesculus carnea (plant)
horse chestnut: Red horse chestnut (A. × carnea), a hybrid of A. hippocastanum and A. pavia, grows up to 20 m (65 feet) and has flesh-coloured to scarlet flower spikes.
- Aesculus flava (plant)
buckeye: Species: …eastern United States is the sweet, or yellow, buckeye (A. flava), which bears yellow flowers and is the largest buckeye species, reaching up to 27 metres (89 feet). The red buckeye (A. pavia) produces red flowers and is an attractive small tree, rarely reaching more than 7.6 metres (25 feet)…
- Aesculus glabra (plant)
buckeye: Species: The most-notable species is the Ohio buckeye (A. glabra), also called fetid, or Texas, buckeye, which is primarily found in the Midwestern region of the United States. The tree grows up to 21 metres (70 feet) in height and has twigs and leaves that yield an unpleasant odour when crushed.…
- Aesculus hippocastanum (plant)
horse chestnut: The tree’s common name is said to come from Turkey, where the nuts were fed to horses to cure broken wind.
- Aesculus indica (plant)
horse chestnut: The Indian horse chestnut (A. indica), with slender, pointed leaflets, has attractive feathery flower spikes with a bottlebrush effect. Red horse chestnut (A. × carnea), a hybrid of A. hippocastanum and A. pavia, grows up to 20 m (65 feet) and has flesh-coloured to scarlet flower…
- Aesculus octandra (plant)
buckeye: Species: …eastern United States is the sweet, or yellow, buckeye (A. flava), which bears yellow flowers and is the largest buckeye species, reaching up to 27 metres (89 feet). The red buckeye (A. pavia) produces red flowers and is an attractive small tree, rarely reaching more than 7.6 metres (25 feet)…
- Aesculus parviflora (plant)
buckeye: Species: The bottlebrush buckeye (A. parviflora) is an attractive shrub, native to Georgia and Alabama, that bears white flowers in erect spikes about 30 cm (1 foot) long. The painted, or Georgia, buckeye (A. sylvatica) is a rounded shrub or small tree, up to 7.6 metres (25…
- Aesculus pavia (plant)
buckeye: Species: The red buckeye (A. pavia) produces red flowers and is an attractive small tree, rarely reaching more than 7.6 metres (25 feet) in height.
- Aesculus sylvatica (plant)
buckeye: Species: The painted, or Georgia, buckeye (A. sylvatica) is a rounded shrub or small tree, up to 7.6 metres (25 feet) high, with yellow to reddish flowers. The California buckeye (A. californica) is endemic to California and southwestern Oregon and features sweetly scented white-to-pink flowers. At least…
- Aesculus turbinata (plant)
horse chestnut: Japanese horse chestnut (A. turbinata) is as tall as the European species but is distinctive for its remarkably large leaves, up to 60 cm (2 feet) across. The Indian horse chestnut (A. indica), with slender, pointed leaflets, has attractive feathery flower spikes with a bottlebrush…
- Aesernia (Italy)
Isernia, town, Molise region, south central Italy, between the Carpino and Sordo rivers, west of Campobasso. It originated as Aesernia, a town of the Samnites (an ancient Italic people), and later became a Roman colony. Isernia suffered severe damage in World War II but has been rebuilt. Notable
- Aeshma (Zoroastrian figure)
angel and demon: In Zoroastrianism, Judaism, Christianity, and Islam: Among other demonic figures is Aēshma (violence, fury, or the aggressive impulse)—who may well be the demon Asmodeus of the book of Tobit, Āz (Concupiscence or Lust), Mithrāndruj (He Who Lies to Mithra or False Speech), Jēh (the demon Whore, created later by Ahriman to defile the human race), and…
- Aesir (Scandinavian mythology)
Aesir, in Scandinavian mythology, either of two main groups of deities, four of whom were common to the Germanic nations: Odin (q.v.), chief of the Aesir; Frigg (q.v.), Odin’s wife; Tyr (q.v.), god of war; and Thor (q.v.), whose name was the Teutonic word for thunder. Some of the other important
- Aesis (Italy)
Jesi, town and episcopal see, Marche regione, east-central Italy. Jesi lies along the Esino River, just southwest of Ancona. The Roman colony of Aesis from 247 bc, it was destroyed by the Goths and Lombards and formed part of the Frankish king Pippin III’s gift to the church in 756. In the early
- Aesop (legendary Greek fabulist)
Aesop, the supposed author of a collection of Greek fables, almost certainly a legendary figure. Various attempts were made in ancient times to establish him as an actual personage. Herodotus in the 5th century bce said that he had lived in the 6th century and that he was a slave, and Plutarch in
- Aesopus, Claudius (Roman tragedian)
Claudius Aesopus was the most eminent of the Roman tragedians, contemporary and intimate friend of Cicero, whom he instructed in elocution, and regarded by Horace as the equal of the great Roman comic actor Roscius. Aesopus became completely absorbed in his roles; the biographer Plutarch mentions
- Aesopus, Clodius (Roman tragedian)
Claudius Aesopus was the most eminent of the Roman tragedians, contemporary and intimate friend of Cicero, whom he instructed in elocution, and regarded by Horace as the equal of the great Roman comic actor Roscius. Aesopus became completely absorbed in his roles; the biographer Plutarch mentions
- Aesthetic (work by Croce)
aesthetics: Expressionism: …most important influence on modern aesthetics has been Croce. His oft-cited Estetica come scienza dell’ espressione e linguistica generale (1902; Aesthetic as Science of Expression and General Linguistics, or Aesthetic) presents, in a rather novel idiom, some of the important insights underlying the theories of his predecessors. In this work,…
- Aesthetic as Science of Expression and General Linguistics (work by Croce)
aesthetics: Expressionism: …most important influence on modern aesthetics has been Croce. His oft-cited Estetica come scienza dell’ espressione e linguistica generale (1902; Aesthetic as Science of Expression and General Linguistics, or Aesthetic) presents, in a rather novel idiom, some of the important insights underlying the theories of his predecessors. In this work,…