- archivolt
archivolt, molding running around the face of an arch immediately above the opening. The architectural term is applied especially to medieval and Renaissance buildings, where the archivolts are often decorated with sculpture, as in the archivolts on the west facade of Chartres cathedral
- archlute (musical instrument)
archlute, large 16th-century bass lute provided with additional bass strings, or diapasons, and producing a deeper sound that could be used in orchestral basso continuo parts. The diapasons were tuned according to individual preference, usually in a descending scale from the lowest principal
- archon (ancient Greek magistrate)
archon, in ancient Greece, the chief magistrate or magistrates in many city-states. The office became prominent in the Archaic period, when the kings (basileis) were being superseded by aristocrats. At Athens the list of annual archons begins with 682 bc. By the middle of the 7th century bc,
- Archon (Gnosticism)
Archon, in gnosticism, any of a number of world-governing powers that were created with the material world by a subordinate deity called the Demiurge (Creator). Although gnosticism did not constitute a single movement, most gnostics were religious dualists who held that matter is inferior and the
- archon basileus (ancient Greek official)
archon: …the kingship survived in the basileus, who, as chief religious officer, presided over the Areopagus (aristocratic council) when it sat as a homicide court. Lastly there were six thesmotetai (“determiners of custom”), who dealt with miscellaneous judicial problems.
- archontes (ancient Greek magistrate)
archon, in ancient Greece, the chief magistrate or magistrates in many city-states. The office became prominent in the Archaic period, when the kings (basileis) were being superseded by aristocrats. At Athens the list of annual archons begins with 682 bc. By the middle of the 7th century bc,
- Archontonis, Dimitrios (Eastern Orthodox patriarch)
Bartholomew I has served as the 270th ecumenical patriarch and archbishop of Constantinople within the Eastern Orthodox Church since 1991. An influential religious leader of worldwide repute, he is known not only for his stewardship of Eastern Orthodoxy but also for his efforts toward
- Archosargus probatocephalus (fish, Archosargus species)
sheepshead, (Archosargus probatocephalus), popular edible sport fish in the family Sparidae (order Perciformes), common in Atlantic and Gulf of Mexico waters of the southern North American coast. Although once prevalent in the New England to Chesapeake Bay area, the species has inexplicably become
- archosaur (reptile subclass)
archosaur, (subclass Archosauria), any of various reptiles, including all crocodiles and birds and all descendants of their most recent common ancestor. Archosaurs (“ruling reptiles”) are members of a subclass that also includes the dinosaurs, the pterosaurs (flying reptiles), and several groups of
- Archosauria (reptile subclass)
archosaur, (subclass Archosauria), any of various reptiles, including all crocodiles and birds and all descendants of their most recent common ancestor. Archosaurs (“ruling reptiles”) are members of a subclass that also includes the dinosaurs, the pterosaurs (flying reptiles), and several groups of
- Archosaurus (fossil reptile genus)
Archosaurus, early genus of reptiles found as fossils in Middle and Late Permian deposits of Europe (265 million to 251 million years ago). Archosaurus typifies the progressive changes occurring in reptilian structure that eventually led to their dominance as the major vertebrates. A clear trend
- Archostemata (insect suborder)
coleopteran: Annotated classification: Suborder Archostemata Hind coxae rarely fused to metasternum; distinct notopleural suture between notum and pleural sclerites. Family Crowsoniellidae 1 species, Crowsoniella relicta. Family Cupesidae (Cupedidae; reticulated beetles)
- Archy (fictional character)
Don Marquis: Archy and Mehitabel first appeared in “The Sun Dial.” Archy’s poetic reflections on the world and the racy misadventures of Mehitabel were related in first person and lowercase by Archy, who supposedly could not press down the typewriter’s shift key.
- Archy and Mehitabel (work by Marquis)
Archy and Mehitabel, collection of humorous stories by Don Marquis, originally published from 1916 in Marquis’s newspaper columns “The Sun Dial” in the New York Evening Sun and “The Lantern” in the New York Herald Tribune and published in book form in 1927. The stories centre on Archy, a
- Archytas of Tarentum (Greek mathematician)
Archytas of Tarentum was a Greek scientist, philosopher, and major Pythagorean mathematician. Plato, a close friend, made use of his work in mathematics, and there is evidence that Euclid borrowed from him for the treatment of number theory in Book VIII of his Elements. Archytas was also an
- Arcidae (mollusk)
ark shell, any of the species of predominantly marine bivalve mollusks of the family Arcidae. Such clams are characterized by boat-shaped shells with long, straight hinge lines bearing many small, interlocking teeth. The shells are usually coated with a thick, sometimes hairy periostracum (outer
- Arcila (Morocco)
Asilah, city on the Atlantic coast of northwestern Morocco, south of Tangier. While some attribute its founding to the Phoenicians, others believe its origins date back to the Roman period; perhaps each account refers to a slightly different location on this busy coastal strip not far from Europe.
- Arcimboldi, Giuseppe (Italian painter)
Giuseppe Arcimboldo was an Italian Mannerist painter whose grotesque compositions of fruits, vegetables, animals, books, and other objects were arranged to resemble human portraits. In the 20th century these double images were greatly admired by Salvador Dali and other Surrealist painters.
- Arcimboldo, Giuseppe (Italian painter)
Giuseppe Arcimboldo was an Italian Mannerist painter whose grotesque compositions of fruits, vegetables, animals, books, and other objects were arranged to resemble human portraits. In the 20th century these double images were greatly admired by Salvador Dali and other Surrealist painters.
- Arciniega, Claudio de (architect)
Latin American architecture: Eighteenth-century architecture in Mexico: …in the 16th century by Claudio de Arciniega, is Classical in its layout, with extraordinary fragments of an exuberant Baroque decoration applied on the surface. The cathedral’s Altar of the Kings (1718–37), by Jerónimo de Balbás, began a formal type that would be applied until the end of the 18th…
- Arciniegas, Germán (Colombian writer and diplomat)
Germán Arciniegas was a Colombian historian, essayist, diplomat, and statesman whose long career in journalism and public service strongly influenced the cultural development of his country in the 20th century. His contributions abroad as an educator and diplomat played an important role in
- arciṣmatī (Buddhism)
bhūmi: …with the noble doctrine), (4) arciṣmatī (“brilliant,” the rays of his virtue consuming evil passions and ignorance), (5) sudurjayā (“hard to conquer”), (6) abhimukhī (“turning toward” both transmigration and nirvana), (7) dūraṅgamā (“far-going”), (8) acalā (“immovable”), (9) sādhumatī (“good-minded”), and
- Arcite (fictional character)
The Two Noble Kinsmen: Palamon and Arcite, two noble nephews of Creon, are captured. As they languish in prison, their protestations of eternal friendship stop the instant they glimpse Emilia through a window, and they quarrel over her. Arcite is unexpectedly released and banished, but he returns in disguise; Palamon escapes…
- Arcivescovile, Palazzo (building, Udine, Italy)
Giovanni Battista Tiepolo: Early life: …until the frescoes of the Palazzo Arcivescovile of Udine, executed sometime after 1726, that Tiepolo, then about 30, reached full maturity of expression. In these frescoes, he gave up the chiaroscuro of his early works and greatly brightened his colour, while preserving his form intact. The decoration was commissioned by…
- arco (stringed instrument accessory)
bow, in music, curved stick with tightly held fibres that produces sound by friction when drawn across the strings of a chordophone, such as a rebab, violin, or erhu. The most common material is rosined horsehair; some African bows used strips cut from rubber inner tubes, and the Korean ajaeng, a
- ARCO (American oil company)
Atlantic Richfield Company (ARCO), former American petroleum corporation that was headquartered in Los Angeles and was bought in 2000 by the giant BP Amoco (later BP PLC). The Atlantic Richfield Company was created in 1966 by the merger of Richfield Oil Corporation and Atlantic Refining Company.
- Arcoida (bivalve order)
bivalve: Annotated classification: Order Arcoida Shell solid, elongate or circular-oval, often heavily ribbed; fibrous periostracum with simple crossed-lamellar outer layer and inner complex crossed-lamellar layer, thereby differing from all other pteriomorphs; dimyarian; hinge with vertical denticulations; ctenidia filibranch; mantle margin with uniquely divided outer fold; foot often byssate; marine;…
- arcology (settlement structure)
Paolo Soleri: Soleri coined the term arcology (from architecture and ecology) to describe his utopian constructions, which he delineated in drawings of great beauty and imagination. The exhibition of his drawings and models in major American cities in 1970 brought him widespread public notice. Soleri’s Arcology: The City in the Image…
- Arcos de la Frontera (Spain)
Arcos de la Frontera, city, Cádiz provincia (province), in the comunidad autónoma (autonomous community) of Andalusia, southern Spain. It is located on a high rock bounded on three sides by the Guadalete River. Rich in Moorish architecture, the city also contains the Gothic churches of Santa María
- Arcosanti (Arizona, United States)
Arizona: Cultural life: …the futuristic, embryonic city of Arcosanti designed by Paolo Soleri are found in Arizona. Among the many structures in the Spanish style, the Heard Museum is outstanding, and the Nogales Public Library synthesizes the Spanish Southwestern and contemporary styles. Probably the most-photographed building in all of Arizona is the San…
- Arcot (India)
Arcot, town, northeastern Tamil Nadu state, southeastern India, on the Palar River. It is located at the point where the Palar River valley meets the Coromandel Coast region and commands the inland route from Chennai (Madras) to Bengaluru (Bangalore), between the Mysore Ghat and the Javadi Hills. A
- Arcs, Les (ski resort, Savoy, France)
Charlotte Perriand: Collaborations with Jean Prouvé, visits to Japan, and Les Arcs: …largest project—the ski resort of Les Arcs in Savoy (1967–85)—united her work and the landscape she remembered so fondly from her youth. Those designs demonstrate the caliber, value, and longevity of Perriand’s rich contribution to the profession.
- Arctic (northernmost region of the Earth)
Arctic, northernmost region of Earth, centred on the North Pole and characterized by distinctively polar conditions of climate, plant and animal life, and other physical features. The term is derived from the Greek arktos (“bear”), referring to the northern constellation of the Bear. It has
- Arctic air mass (atmospheric science)
air mass: Maritime Polar (mP) air masses develop over the polar areas of both the Northern and the Southern hemispheres. They generally contain considerably more moisture than the cP air masses. As they move inland in middle and high latitudes, heavy precipitation may occur when the air is forced…
- Arctic Archipelago (islands, Canada)
Arctic Archipelago, Group of Canadian islands, Arctic Ocean. They lie north of the Canadian mainland and have an area of about 550,000 sq mi (1,424,500 sq km). The southeastern islands are an extension of the Canadian Shield; the balance consists of the Arctic lowlands to the south and the
- Arctic Basin (geographical feature, Arctic Ocean)
Atlantic Ocean: Extent: This is because the Arctic basin—which stretches from the Bering Strait across the North Pole to Spitsbergen and Greenland—resembles a semienclosed basin (i.e., it is nearly surrounded by land, receives proportionately large volumes of river discharge and sediments, has an extensive continental margin, and is relatively shallow). In this…
- Arctic Bay (Nunavut, Canada)
Admiralty Inlet: Arctic Bay (Ikpiarjuk; pop. [2006] 690; [2011] 823), a mineral exploration and hunting base, is on its northeastern shore.
- Arctic char (fish)
char: The Arctic char (S. alpinus), of North America and Europe, inhabits the Arctic and adjacent oceans and enters rivers and lakes to breed. Some populations are restricted to freshwater lakes, which they colonized in glacial times. Like the other chars, the Arctic char is a good…
- Arctic Circle
Arctic Circle, parallel, or line of latitude around Earth, at approximately 66°30′ N. Because of Earth’s inclination of about 23 1 2 ° to the vertical, it marks the southern limit of the area within which, for one day or more each year, the sun does not set (about June 21) or rise (about December
- Arctic Convergence
Pacific Ocean: Deepwater circulation: A corresponding Arctic Convergence is prominent in the northeastern Pacific.
- Arctic Council (intergovernmental body)
Arctic Council, intergovernmental body that promotes research and facilitates cooperation among Arctic countries on issues related to the environmental protection and sustainable development of the Arctic region. The council was created in Ottawa in 1996 by the Declaration on the Establishment of
- Arctic Culture Area (anthropology)
Native American: The Arctic: This region lies near and above the Arctic Circle and includes the northernmost parts of present-day Alaska and Canada. The topography is relatively flat, and the climate is characterized by very cold temperatures for most of the year. The region’s extreme northerly location alters…
- Arctic Dogs (film by Woodley [2019])
Alec Baldwin: 30 Rock, SNL, and later films: …Baby: Family Business (2021); and Arctic Dogs (2019). In 2020 he reprised the role of Donaghy for 30 Rock: A One-Time Special, which featured promotions for NBCUniversal’s 2020–21 TV lineup. That year Baldwin also appeared in Chick Fight, about a women’s underground fight club.
- Arctic foothills (mountains, United States)
Alaskan mountains: …the Brooks Range and the Arctic foothills, which extend the Rocky Mountains in an east-west arc from the border with Canada across northern Alaska. Central Alaska is characterized by highlands and basins drained by the great Yukon and Kuskokwim river systems. That area has been likened by some to a…
- Arctic fox (mammal)
Arctic fox, (Vulpes lagopus), northern fox of the family Canidae, found throughout the Arctic region, usually on tundra or mountains near the sea. Fully grown adults reach about 50–60 cm (20–24 inches) in length, exclusive of the 30-cm (12-inch) tail, and a weight of about 3–8 kg (6.6–17 pounds).
- Arctic ground squirrel (rodent)
dormancy: Causes of dormancy: For example, the Arctic ground squirrel (whose winter period of dormancy is referred to as hibernation), when taken into the laboratory, supplied with adequate amounts of food and water, and exposed to constant temperature and light, exhibits periodic torpor (extreme sluggishness)—an innate behavioral pattern that operates independently of…
- Arctic Islands (islands, Canada)
Arctic Archipelago, Group of Canadian islands, Arctic Ocean. They lie north of the Canadian mainland and have an area of about 550,000 sq mi (1,424,500 sq km). The southeastern islands are an extension of the Canadian Shield; the balance consists of the Arctic lowlands to the south and the
- Arctic loon (bird)
loon: …but some species, especially the Arctic loon, or black-throated diver (G. arctica), winter or migrate in flocks. The voice is distinctive, including guttural sounds and the mournful, eerie wailing cries that in North America may have given rise to the common name loon. (Some sources suggest it arises from the…
- Arctic Monkeys (British rock band)
rock: Rock in the early 21st century: …for new bands such as Arctic Monkeys and Kings of Leon, social networking Web sites were crucial to the way in which audiences could be built from the bottom up, initial enthusiasm spreading by word of mouth rather than by top-down media campaigns. The “local” buzz that has always driven…
- Arctic National Wildlife Refuge (Alaska, United States)
Arctic National Wildlife Refuge, vast natural area occupying the northeastern corner of the U.S. state of Alaska. It was established in 1960 as Arctic National Wildlife Range with an area of approximately 13,900 square miles (36,000 square km) and was expanded and renamed Arctic National Wildlife
- Arctic Ocean
Arctic Ocean, smallest of the world’s oceans, centring approximately on the North Pole. The Arctic Ocean and its marginal seas—the Chukchi, East Siberian, Laptev, Kara, Barents, White, Greenland, and Beaufort and, according to some oceanographers, also the Bering and Norwegian—are the least-known
- Arctic Oscillation (climatology)
sea ice: Pack ice drift and thickness: …centre is known as the Arctic Oscillation.
- Arctic peoples
Native American: The Subarctic Indians and the Arctic peoples: The European exploration of the Subarctic was for many decades limited to the coasts of the Atlantic and Hudson Bay, an inland sea connected to the Atlantic and the Arctic oceans. The initial European exploration of the bay occurred in 1610. It was…
- Arctic Polar Front
Pacific Ocean: Deepwater circulation: A corresponding Arctic Convergence is prominent in the northeastern Pacific.
- Arctic poppy (plant)
polar ecosystem: Biota of the Arctic: …conditions include species of the Arctic poppy (Papaver), some rushes (Juncus), small saxifrages (Saxifraga), and a few other rosette-forming herbaceous species. The Arctic poppy and a few of the other flowering herbs adapted to the High Arctic have flowers that are solartropic (turning in response to the Sun). Their parabolic-shaped…
- Arctic Red River (river, Canada)
Mackenzie River: The lower course: Where the Arctic Red River enters from the south, the Mackenzie again flows between steep rock walls, which rise up to 200 feet (60 metres) directly from the water.
- Arctic sea smoke (meteorology)
fog: …pack ice; hence, the term Arctic sea smoke.
- Arctic Small Tool tradition (culture)
Arctic: History of settlement: …bce, when people of the Arctic Small Tool tradition began to replace any Northern Archaic people who were exploiting the largely treeless lands immediately inland from the coasts. Predominantly terrestrial in subsistence orientation—hunting especially caribou and musk ox and taking river and lake fish—the people of the Arctic Small Tool…
- Arctic sperm oil (whale oil)
bottlenose whale: Bottlenose oil is very similar to spermaceti and was known as “Arctic sperm oil.” It sold for a lower price and gummed more easily than sperm oil. The bottlenose whale fishery peaked in the 1890s and again in the 1960s.
- Arctic tern (bird)
Arctic tern, (Sterna paradisaea), tern species that makes the longest annual migration of any bird. It breeds in the southerly reaches of the Arctic and winters in the Antarctic, making its migration a round-trip of 60,000 to 82,000 km (roughly 37,000 to 51,000 miles). Its appearance—white with a
- Arctic tundra
Arctic: Traditional culture: …ecosystems, the taiga and the tundra. The open terrain of the tundra permits the supervision of large herds, and these generally migrate with their herdsmen between winter pastures within the margins of the taiga and summer pastures out on the tundra. Such pastoralism therefore entails fairly extended nomadic movements, sometimes…
- Arctic Zone
Arctic: Animal life: …section is from the true Arctic Zone only. On the land, this is the zone north of the tree line; in the sea, it is the area in which the upper water is of Arctic Ocean origin, without admixture of Atlantic or Pacific water. This excludes most of the west…
- Arctictis binturong (mammal)
binturong, (Arctictis binturong), catlike omnivore of the civet family (Viverridae), found in dense forests of Southeast Asia. Its range extends from Nepal, India, and Bhutan southward to the Indonesian islands of Sumatra and Java and eastward to Borneo. It has long shaggy hair, tufted ears, and a
- Arctiidae (insect)
tiger moth, (family Arctiidae), any of about 11,000 species of moths (order Lepidoptera), the common name of which is derived from that of one of its most common genera, Grammia, which have dark wings with red or orange spots and white stripes, sometimes displayed in striking geometric patterns.
- Arctium (plant)
burdock, (genus Arctium), a genus of biennial plants in the Asteraceae family, bearing globular flower heads with prickly bracts (modified leaves). Burdock species, native to Europe and Asia, have been naturalized throughout North America. Though regarded as weeds in the United States, they are
- Arctium minus (plant)
burdock: Common, or lesser, burdock (Arctium minus) is a weed in North American pastures and hayfields and can be grown as a vegetable. The plant forms a low rosette during its first year and develops a tall branched stem during its second year. The leaves have a wavy…
- Arctocephalus (mammal)
fur seal: The eight species of southern fur seals (Arctocephalus) are distributed in the Southern Hemisphere, except for a herd of Guadalupe fur seals (A. townsendi) on Guadalupe Island off the northwest coast of Baja California. Southern fur seals are gray to brown or black in colour with chestnut-coloured underfur. Length…
- Arctocephalus australis (mammal)
fur seal: …the late 1970s about 14,000 South American fur seals (A. australis) were being harvested annually. Other species, including the once-numerous New Zealand fur seal (A. forsteri), the Galapagos fur seal (A. galapagoensis), and the Juan Fernandez fur seal (A. philippii), all of which were hunted nearly to the point of…
- Arctocephalus forsteri (mammal)
fur seal: Other species, including the once-numerous New Zealand fur seal (A. forsteri), the Galapagos fur seal (A. galapagoensis), and the Juan Fernandez fur seal (A. philippii), all of which were hunted nearly to the point of extinction, have been protected by law.
- Arctocephalus galapagoensis (mammal)
fur seal: forsteri), the Galapagos fur seal (A. galapagoensis), and the Juan Fernandez fur seal (A. philippii), all of which were hunted nearly to the point of extinction, have been protected by law.
- Arctocephalus philippii (mammal)
fur seal: galapagoensis), and the Juan Fernandez fur seal (A. philippii), all of which were hunted nearly to the point of extinction, have been protected by law.
- Arctocephalus pusillus (mammal)
fur seal: …metres (4–6 feet), but the South African, or Cape, fur seal (A. pusillus) and the Australian fur seal (A. pusillus doriferus) grow to lengths and weights of about 2.5 metres (8 feet) and 300 kg in the male, 1.8 metres and 120 kg (265 pounds) in the female. Like the…
- Arctocephalus pusillus doriferus (mammal)
fur seal: pusillus) and the Australian fur seal (A. pusillus doriferus) grow to lengths and weights of about 2.5 metres (8 feet) and 300 kg in the male, 1.8 metres and 120 kg (265 pounds) in the female. Like the northern form, southern fur seals are gregarious and carnivorous. By…
- Arctocephalus townsendi (mammal)
fur seal: …except for a herd of Guadalupe fur seals (A. townsendi) on Guadalupe Island off the northwest coast of Baja California. Southern fur seals are gray to brown or black in colour with chestnut-coloured underfur. Length averages about 1.2–1.8 metres (4–6 feet), but the South African, or Cape, fur seal (A.…
- Arctocyon (fossil mammal genus)
Condylarthra: …some condylarths appear almost carnivore-like; Arctocyon, for example, had long canines and triangular premolars.
- Arctogaea Realm (faunal region)
biogeographic region: Fauna: Wallace recognized three realms: Megagaea or Arcotogaea, which includes Africa, Eurasia, and North America; Notogaea, including Australia, Oceania, and New Zealand; and Neogaea, including Central and South America. His divisions, although modified, form the basis of the realms recognized today (Figure 2).
- Arctoidea (mammal)
carnivore: Critical appraisal: …families into two distinct superfamilies, Canoidea and Feloidea (or Aeluroidea), appears to be a natural arrangement dating back to the works of W.H. Flower and H. Winge in the late 1800s. In Canoidea, as revealed by studies in comparative anatomy and the fossil record, the families Canidae, Ursidae, and Procyonidae…
- Arctolepis (placoderm genus)
Arctolepis, extinct genus of placoderms (fishlike animals) present during the early part of the Devonian Period (416 million to 360 million years ago), member of a group known as the arthrodires, or jointed-neck fishes. Arctolepis had a bony head and trunk shield but was unarmoured behind the trunk
- Arctonoe (polychaete genus)
annelid: Annotated classification: mouse), Halosydna (common scale worm), Arctonoe. Order Amphinomida Free-moving; prostomium with 1 to 5 antennae, 2 palpi, and a caruncle (posterior ridge) deeply set into anterior segments; parapodia with 2 lobes and branchiae (gills); size, 0.5 to 35 cm; examples of genera: Eurythoe (fireworm), Euphrosyne.
- Arctonyx collaris (mammal)
badger: The hog badger (Arctonyx collaris), also called the hog-nosed, or sand, badger, is a pale-clawed species of both lowland and mountainous regions in a range similar to that of ferret badgers. It is gray to black, with a black-and-white-striped head pattern and white throat, ears, and…
- Arctos (constellation)
Ursa Major, in astronomy, a constellation of the northern sky, at about 10 hours 40 minutes right ascension and 56° north declination. It was referred to in the Old Testament (Job 9:9; 38:32) and mentioned by Homer in the Iliad (xviii, 487). The Greeks identified this constellation with the nymph
- Arctostaphylos (plant)
manzanita, any of about 50 species of evergreen shrubs and trees of the genus Arctostaphylos, of the heath family (Ericaceae), native to western North America. The leaves are alternate, thick, evergreen, and smooth-edged. The small, urn-shaped flowers are pink or white and are borne in terminal
- Arctostaphylos manzanita (plant)
manzanita: manzanita, the common manzanita, and A. stanfordiana, the stanford manzanita—are cultivated for their showy, massive displays of flowers and beautiful smooth bark. The fruit of the manzanita is a smooth brown or red berry that contains one or more stones.
- Arctostaphylos stanfordiana (plant)
manzanita: stanfordiana, the stanford manzanita—are cultivated for their showy, massive displays of flowers and beautiful smooth bark. The fruit of the manzanita is a smooth brown or red berry that contains one or more stones.
- Arctostaphylos uva-ursi (plant)
bearberry, (Arctostaphylos uva-ursi), flowering prostrate evergreen shrubs of the heath family (Ericaceae), occurring widely throughout the northern reaches of Europe, Asia, and North America in rocky and sandy woods and in open areas. It has woody stems that are often 1.5–1.8 metres (5–6 feet)
- Arcturus (star)
Arcturus, the fourth brightest star in the night sky, and the brightest star in the northern constellation Boötes, with an apparent visual magnitude of −0.05. It is an orange-coloured giant star 36.7 light-years from Earth. It lies in an almost direct line with the tail of Ursa Major (the Great
- Arcturus the Hunting Hound and Other Stories (work by Kazakov)
children’s literature: Russia/Soviet Union: …nature and animal tales in Arcturus the Hunting Hound and Other Stories (1968) by Yury Kazakov. But one can only record, without judging, the vast production of such popular children’s writers as Samuil Marshak, Sergey Mikhalkov, Lev Kassil, and N. Nosov. Especially notable is the popularity of poetry, whether it…
- arcuate artery (anatomy)
renal system: Arteries and arterioles: …right angles into branches called arcuate arteries that curve along between the cortex and the medulla parallel to the surface of the kidney. Many arteries, called interlobular arteries, branch off from the arcuate arteries and radiate out through the cortex to end in networks of capillaries in the region just…
- Arcueil (France)
Erik Satie: …1898 he lived alone in Arcueil, a Paris suburb, cultivating an eccentric mode of life and permitting no one to enter his apartment. Beginning in 1905, he studied at the Schola Cantorum under Vincent d’Indy and Albert Roussel for three years. About 1917 the group of young composers known as…
- Arcueil circle (French science society)
Joseph-Louis Gay-Lussac: Early career: …in his country house at Arcueil, just outside of Paris, became the focus of a small but very influential private scientific society. The society’s first volume of memoirs, published in 1807, included contributions from Gay-Lussac.
- Arculf (German bishop)
Arculf was a bishop who was the earliest Western Christian traveler and observer of importance in the Middle East after the rise of Islām. Although he most likely was connected with a monastery, some believe he was the bishop of Périgueux, Aquitaine. On his return from a pilgrimage to the Holy Land
- ARD (German television station)
Germany: Broadcasting: …form one evening television offering, ARD (Arbeitsgemeinschaft der Öffentlich-Rechtlichen Rundfunkanstalten Deutschlands). This is complemented by a second television network, ZDF (Zweites Deutsches Fernsehen), which is based in Mainz. A third channel is operated by ARD but is organized and broadcast regionally, with special emphasis placed on local and regional events…
- Ard Mhacha (Northern Ireland, United Kingdom)
Armagh, city, Armagh City, Banbridge, and Craigavon district, southern Northern Ireland. The hill fort of Ard Mhacha, around which modern Armagh city developed, became important in the 4th century. In the 5th century St. Patrick established his principal church in Ireland on the hill fort site,
- Ard Mhacha (ancient fortress, Armagh, Northern Ireland, United Kingdom)
Armagh: The hill fort of Ard Mhacha, around which modern Armagh city developed, became important in the 4th century. In the 5th century St. Patrick established his principal church in Ireland on the hill fort site, which later became a medieval ecclesiastical capital. Armagh’s capture by English (Protestant) forces in…
- árd rí Éireann (ancient Irish title)
Ireland: Political and social organization: …king of all Ireland (árd rí Éireann). A division of the country into five groups of tuatha, known as the Five Fifths (Cuíg Cuígí), occurred about the beginning of the Christian era. These were Ulster (Ulaidh), Meath (Midhe), Leinster (Laighin), Munster (Mumhain), and
- Ard-Fheis (political body, Ireland)
Fianna Fáil: Policy and structure: The Ard-Fheis (Annual Conference) is the supreme governing body but in practice cedes most of its authority to a much smaller Executive Committee, which oversees the organization, and to senior ministers or spokespersons (when the party is in opposition), who effectively determine policy. The Ard-Fheis elects…
- Arda River (river, Bulgaria)
Arda River, river in Bulgaria, rising in the central Rhodope Mountains near the town of Smolyan and following a 180-mile (290-kilometre) course eastward past Kŭrdzhali and Ivaylovgrad to enter the Maritsa just west of Edirne, Tur., after a 23-mile (37-kilometre) course in Greece. The Bulgarian
- Ardaban I (king of Parthia)
Artabanus I was the king of Parthia (reigned 211–191 bc) in southwestern Asia. In 209 he was attacked by the Seleucid king Antiochus III of Syria, who took Hecatompylos, the Arsacid capital (the present location of which is uncertain), and Syrinx in Hyrcania. Finally, however, Antiochus concluded a
- Ardaban II (king of Parthia)
Parthia: …I (reigned 171–138 bce) and Artabanus II (reigned 128–124 bce), all of the Iranian Plateau and the Tigris-Euphrates valley came under Parthian control. The Parthians, however, were troubled by nomad attacks on their northeastern borders as well as attacks by the Scythians. Mithradates II the Great (reigned 123–88 bce), by…
- Ardaban III (king of Parthia)
Artabanus III was the king of Parthia (reigned c. ad 12–c. 38). At first king of Media Atropatene, Artabanus III took the Parthian throne in ad 9 or 10 from Vonones and was proclaimed king about two years later in Ctesiphon, the Parthian capital on the Tigris River. Vonones fled to Armenia, but