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cortical hearing centre (anatomy)
The auditory cortex provides the temporal and spatial frames of reference for the auditory data that it receives. In other words, it is sensitive to aspects of sound more complex than frequency. For instance, there are neurons that react only when a sound starts or stops. Other neurons are sensitive only to particular durations of sound. When a sound is repeated many times, some neurons......
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cortical laminar sclerosis (pathology)
...disease, which involves the degeneration of the corpus callosum, the tissue that connects the two hemispheres of the brain. Other brain damage occasionally reported in alcoholics includes cortical laminar sclerosis, cerebellar degeneration, and central pontine myelinolysis. Alcoholics, especially older ones, frequently experience enlargement of the ventricles as a result of atrophy of......
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cortical-striatal-thalamic-cortical circuit (anatomy)
...defined as the ability to focus on one stimulus or task while resisting focus on the extraneous impulses; people with ADHD may have reduced ability to resist focus on these extraneous stimuli. The cortical-striatal-thalamic-cortical circuit, a chain of neurons in the brain that connects the prefrontal cortex, the basal ganglia, and the thalamus in one continuous loop, is thought to be one of......
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Corticiales (order of fungi)
...with or without clamp connections; example genera include Cantharellus, Botryobasidium, Craterellus, and Tulasnella. Order Corticiales (incertae sedis; not placed in any subclass)Parasitic, saprobic, or symbiotic with algae to form lichen; spores range in.....
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“cortiço, O” (novel by Azevedo)
...pensão (1884; “The Boarding House”), on the effects of detrimental social forces upon the individual, and O cortiço (1890; A Brazilian Tenement), influenced by the French novelist Émile Zola, on the outcasts of society, who struggle with money, sex, prejudice, and social position. Caminha’s ...
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corticoid (chemical compound)
any of a group of more than 40 organic compounds belonging to the steroid family and present in the cortex of the adrenal glands. Of these substances, about six are hormones, secreted into the bloodstream and carried to other tissues, where they elicit physiological responses. (The other corticoids, inactive as hormones, appear to be intermediates in the biosynthesis of the hormones from choleste...
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corticopontine tract (anatomy)
...the middle cerebellar peduncle and serve as the bridge that connects each cerebral hemisphere with the opposite half of the cerebellum. The fibres originating from the cerebral cortex constitute the corticopontine tract....
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corticospinal tract (anatomy)
The corticospinal tract originates from pyramid-shaped cells in the premotor, primary motor, and primary sensory cortex and is involved in skilled voluntary activity. Containing about one million fibres, it forms a significant part of the posterior limb of the internal capsule and is a major constituent of the crus cerebri in the midbrain. As the fibres emerge from the pons, they form compact......
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corticosteroid (chemical compound)
any of a group of more than 40 organic compounds belonging to the steroid family and present in the cortex of the adrenal glands. Of these substances, about six are hormones, secreted into the bloodstream and carried to other tissues, where they elicit physiological responses. (The other corticoids, inactive as hormones, appear to be intermediates in the biosynthesis of the hormones from choleste...
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corticosterone (hormone)
Many steroids have been isolated from the adrenal cortex, but in most vertebrate groups only three of them are active as hormones; they are cortisol (hydrocortisone; compound F), corticosterone (compound B), and aldosterone. Their biosynthesis is outlined in Figure 5....
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corticotropin
a polypeptide hormone formed in the pituitary gland that regulates the activity of the outer region (cortex) of the adrenal glands. In mammals the action of ACTH is limited to those areas of the adrenal cortex in which the glucocorticoid hormones—cortisol and corticosterone (see corticoid)—are formed. The secretion of ACTH by the pituitary is itself regulate...
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corticotropin-releasing factor (biochemistry)
...corticosterone, another adrenal hormone, are monitored by the hypothalamus, a regulatory organ located at the forebrain. Low levels of these substances induce secretion of a releasing hormone, CRF (corticotropin-releasing factor), which acts upon the anterior pituitary, causing the release of ACTH (adrenocorticotropic hormone). ACTH controls the secretion of cortisol from the adrenal cortex.......
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corticotropin-releasing hormone (biochemistry)
...corticosterone, another adrenal hormone, are monitored by the hypothalamus, a regulatory organ located at the forebrain. Low levels of these substances induce secretion of a releasing hormone, CRF (corticotropin-releasing factor), which acts upon the anterior pituitary, causing the release of ACTH (adrenocorticotropic hormone). ACTH controls the secretion of cortisol from the adrenal cortex.......
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Cortigiana (work by Aretino)
...life, free from the conventions that burdened other contemporary dramas. Of the five comedies, written between 1525 and 1544 (modern collection, Commedie, 1914), the best known is Cortigiana (published 1534, first performed 1537, “The Courtesan”), a lively and amusing panorama of the life of the lower classes in papal Rome. Aretino also wrote a tragedy,......
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cortile (architecture)
internal court surrounded by an arcade, characteristic of the Italian palace, or palazzo, during the Renaissance and its aftermath. Among the earliest examples are those of the Palazzo Medici-Riccardi and the Palazzo Strozzi in Florence, both of the late 15th century. The cortile of the Pitti Palace (1560) is one of the most important examples of Mannerist architecture i...
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Cortina d’Ampezzo (Italy)
resort town, Veneto regione, northern Italy, in a scenic basin in the centre of Ampezzo Valley, 25 miles (40 km) north of Belluno city. It lies at the junction of the Boite and Bigontina rivers and is surrounded by spectacular peaks of the Dolomite Alps. The town is dominated by its modern Gothic-style church, whose tall bell tower plays chimes identica...
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Cortina d’Ampezzo Olympics (1956)
Originally awarded the 1944 Winter Games, which were canceled because of World War II, Cortina d’Ampezzo was selected to host the seventh Winter Olympics. Although the Games got off to an ominous start—the torch bearer tripped and fell during the opening ceremony—they were a resounding success. Even the threat of insufficient snow proved a needless worry as a heavy snow fell o...
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Corti’s organ (anatomy)
...a right triangle (Figure 5). Its base is formed by the osseous spiral lamina and the basilar membrane, which separate the cochlear duct from the scala tympani. Resting on the basilar membrane is the organ of Corti, which contains the hair cells that give rise to nerve signals in response to sound vibrations. The side of the triangle is formed by two tissues that line the bony wall of the......
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cortisol (hormone)
an organic compound belonging to the steroid family, the principal hormone secreted by the adrenal glands. It is a potent anti-inflammatory agent and is also used for the palliative treatment of rheumatoid arthritis....
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cortisone (hormone)
a steroid hormone produced by the adrenal cortex. Introduced in 1948 for its anti-inflammatory effect in the treatment of rheumatoid arthritis, it has been largely replaced by related compounds that do not produce certain undesirable side effects....
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Cortland (New York, United States)
city, seat (1808) of Cortland county, central New York, U.S. It lies on the Tioughnioga River, 30 miles (48 km) south of Syracuse. Settled in 1791 and named for a prominent New York family, it is located in one of the state’s richest farming areas. Manufactures include marine equipment, asphalt, machine tools, electronic equipment, fi...
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Cortland (county, New York, United States)
county, central New York state, U.S., located midway between the cities of Syracuse and Binghamton. It is drained by the Tioughnioga and Otselic rivers. Other waterways are Tully, Song, and Little York lakes. The hilly terrain supports such ski areas as Song Mountain, Greek Peak, and Labrador Mountain. Hardwood trees dominate forested regions....
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Cortland, Stephanus Van (American politician)
Dutch-American colonial merchant and public official who was the first native-born mayor of New York City and chief justice of the Supreme Court of New York....
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Cortona (Italy)
city, Toscana (Tuscany) regione, central Italy, on the southern slope of San Egidio Hill just north of Lake Trasimeno. The Roman Corito, it was probably of Umbrian origin but was later an important Etruscan magisterial centre. It emerged from a long period of obscurity in 1202 as a free commune. Sacked by the forces of nearby Arezzo city in 1258, Corton...
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Cortona, Luca da (Italian painter)
Renaissance painter, best known for his nudes and for his novel compositional devices....
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Cortona, Pietro da (Italian artist)
Italian architect, painter, and decorator, an outstanding exponent of Baroque style....
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Cortot, Alfred-Denis (French pianist)
conductor, teacher, and one of the outstanding French pianists of the 20th century, known especially for his interpretations of the later Romantic composers....
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Corts (Spanish and Portuguese parliament)
a representative assembly, or parliament, of the medieval Iberian kingdoms and, in modern times, the national legislature of Spain and of Portugal....
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Corubal River (river, Africa)
...Guinea-Bissau. Bafatá is crosscut by the Gêba River, which flows east-west through the northern half of the region and is navigable to Bafatá town, the regional capital. The Corubal River flows east-west to form Bafatá’s southern border with the Quinará and Tombali regions and empties into the Gêba; it is navigable throughout the Bafatá re...
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Corucia zebrata (lizard)
...the temperate regions of North America. The bodies of skinks are typically cylindrical in cross section, and most species have cone-shaped heads and long, tapering tails. The largest species, the prehensile-tailed skink (Corucia zebrata), reaches a maximum length of about 76 cm (30 inches), but most species are less than 20 cm (8 inches) long. Ground-dwelling and......
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Çorum (Turkey)
city, north-central Turkey. It lies on the edge of a fertile plain. A historic town on old trade routes from central Anatolia to the Black Sea coast, Çorum became famous for its hand-spinning and weaving cottage industries, the manufacture of copper utensils, and its leather products. It is also the main trading centre for the surrounding plain; the plain, watered by the ...
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Corumbá (Brazil)
city and river port, Mato Grosso do Sul estado (state), southwestern Brazil. It is situated on the Paraguay River, at 381 feet (116 m) above sea level, near the border with Bolivia. Founded by the Jesuit procurator Luís de Albuquerque de Melo Pereira e Cáceres as a military outpost and colony in 1778, it became, after the ...
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Coruña, A (province, Spain)
provincia (province) in the comunidad autónoma (autonomous community) of Galicia, northwestern Spain. It was formed in 1833 from part of the captaincy general and former kingdom of Galicia. Bordered by the Atlantic Ocean to the west and the Cantabrian Sea to the north, it has th...
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Coruña, A (Spain)
city, capital of A Coruña provincia (province), in the comunidad autónoma (autonomous community) of Galicia, in extreme northwestern Spain. It lies on an inlet facing the Atlantic Ocean at the mouth of the Mero River. Under the Romans, A Coru...
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Coruña, La (province, Spain)
provincia (province) in the comunidad autónoma (autonomous community) of Galicia, northwestern Spain. It was formed in 1833 from part of the captaincy general and former kingdom of Galicia. Bordered by the Atlantic Ocean to the west and the Cantabrian Sea to the north, it has th...
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Coruña, La (Spain)
city, capital of A Coruña provincia (province), in the comunidad autónoma (autonomous community) of Galicia, in extreme northwestern Spain. It lies on an inlet facing the Atlantic Ocean at the mouth of the Mero River. Under the Romans, A Coru...
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Coruncanius, Tiberius (Roman official)
...ancient Romans had schools of rhetoric that provided training useful to someone planning a career as an advocate, but there was no systematic study of the law as such. During the 3rd century bc, Tiberius Coruncanius, the first plebeian pontifex maximus (chief of the priestly officials), gave public legal instruction, and a class of ......
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corundum (mineral)
naturally occurring aluminum oxide mineral (Al2O3) that is, after diamond, the hardest known natural substance. Its finer varieties are the gemstones sapphire and ruby, and its mixtures with iron oxides and other minerals are called emery....
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Corunna (Spain)
city, capital of A Coruña provincia (province), in the comunidad autónoma (autonomous community) of Galicia, in extreme northwestern Spain. It lies on an inlet facing the Atlantic Ocean at the mouth of the Mero River. Under the Romans, A Coru...
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Corus Group (international corporation)
international steel and metals manufacturer founded in October 1999 through the merger of British Steel of the United Kingdom and Koninklijke Hoogovens of The Netherlands. It is based in London and operates plants in The Netherlands and the United Kingdom in addition to the United States, Germany, Norway, and France. Corus employs a global workforce of nearly 50,000 in the manuf...
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Corvallis (California, United States)
city, Los Angeles county, southwestern California, U.S. Located 17 miles (27 km) southeast of Los Angeles, the city was originally inhabited by Chumash Indians. The area was once a part of the Rancho Los Coyotes, a subdivision (1834) of the 1784 Spanish land grant known as Rancho Los Nietos. In 1869 Gilbert and Atwood Sproul purchased the land, and in 1873, af...
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Corvallis (Oregon, United States)
city, seat (1851) of Benton county, western Oregon, U.S. It lies at the head of navigation of the Willamette River at its confluence with the Mary’s River, 224 feet (68 metres) above sea level and 85 miles (137 km) south of Portland. Laid out in 1851 as Marysville, it was renamed Corvallis (Latin: “Heart of the Valley”) in 1853. For a shor...
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Corvallis College (university, Corvallis, Oregon, United States)
public, coeducational institution of higher learning in Corvallis, Oregon, U.S. It is a comprehensive research university with land-, sea-, and space-grant status and awards undergraduate, graduate, and professional degrees. The university comprises a graduate school, an honours college, an interdisciplinary studies program, and colleges of forestry, oceanic and atmospheric scie...
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Corvedale of Corvedale, Stanley Baldwin, Viscount (prime minister of United Kingdom)
British Conservative politician, three times prime minister between 1923 and 1937; he headed the government during the General Strike of 1926, the Ethiopian crisis of 1935, and the abdication crisis of 1936....
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corvée (law)
unpaid work on public projects that is required by law. Under the Roman Empire, certain classes of the population owed personal services to the state or to private proprietors—for example, labour in lieu of taxes for the upkeep of roads, bridges, and dikes; unpaid labour by coloni (tenant farmers) and freedmen on the estates of landed proprietors; and labour requisitioned for the maintenan...
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corvette (warship)
small, fast naval vessel ranking in size below a frigate. In the 18th and 19th centuries, corvettes were three-masted ships with square rigging similar to that of frigates and ships of the line, but they carried only about 20 guns on the top deck. Frequently serving as dispatchers among ships of a battle fleet, corvettes also escorted merchantmen and showed a nation’s flag in distant parts...
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Corvette (automobile)
...have been made in replacing metals with composites, it appears that technologists have been making the right choices. The introduction of fibreglass-reinforced plastic skins on General Motors’ l953 Corvette sports car marked the first appearance of composites in a production model, and composites have continued to appear in automotive components ever since. In 1984, General Motors...
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Corvi, Domenico (Italian artist)
...elements, and his work includes classical subject pieces as well as portraits in contemporary dress, the sitter posing with antique statues and urns and sometimes amid ruins. The painter Domenico Corvi was influenced by both Batoni and Mengs and was important as the teacher of three of the leading Neoclassicists of the next generation: Giuseppe Cades, Gaspare Landi, and Vincenzo......
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Corvidae (songbird family)
songbird family, of the order Passeriformes, that includes crows, jays, and magpies. The 100 species occur throughout the world; most are nonmigratory. Corvids are strongly built, stout-billed birds 23–71 cm (9–28 inches) long, some being the largest passerines. They have plain, often glossy plumage that may be monochromatic or contrastingly patterned. The sexes look alike. Corvids ...
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Corvin János (son of Matthias I)
illegitimate son of Matthias I, king of Hungary (1458–90). When it became clear to Matthias that his wife, Beatrice, was barren, the king made Corvin prince of Liptó (a region in northern Hungary; now in Slovakia) and baron of Hunyad (in Transylvania). Matthias also succeeded in arranging for his own mother, Erzsébet Szilágyi, to leave her enormous f...
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Corvin, János (son of Matthias I)
illegitimate son of Matthias I, king of Hungary (1458–90). When it became clear to Matthias that his wife, Beatrice, was barren, the king made Corvin prince of Liptó (a region in northern Hungary; now in Slovakia) and baron of Hunyad (in Transylvania). Matthias also succeeded in arranging for his own mother, Erzsébet Szilágyi, to leave her enormous f...
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Corvin, Mátyás (king of Hungary)
king of Hungary (1458–90), who attempted to reconstruct the Hungarian state after decades of feudal anarchy, chiefly by means of financial, military, judiciary, and administrative reforms. His nickname, Corvinus, derived from the raven (Latin corvus) on his escutcheon....
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Corvina (manuscript or book)
any manuscript or book formerly preserved in the Bibliotheca Corviniana, the library assembled by Matthias Corvinus, king of Hungary (1458–90). The library occupied two rooms on the east side of Buda Castle and was decorated with specially commissioned frescoes and stained-glass windows....
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Corvinus, Jakob (German writer)
German writer best known for realistic novels of middle-class life....
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Corvinus, Johannes (son of Matthias I)
illegitimate son of Matthias I, king of Hungary (1458–90). When it became clear to Matthias that his wife, Beatrice, was barren, the king made Corvin prince of Liptó (a region in northern Hungary; now in Slovakia) and baron of Hunyad (in Transylvania). Matthias also succeeded in arranging for his own mother, Erzsébet Szilágyi, to leave her enormous f...
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Corvinus, Matthias (king of Hungary)
king of Hungary (1458–90), who attempted to reconstruct the Hungarian state after decades of feudal anarchy, chiefly by means of financial, military, judiciary, and administrative reforms. His nickname, Corvinus, derived from the raven (Latin corvus) on his escutcheon....
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Corvo, Baron (English author)
English author and eccentric, best known for his autobiographical fantasy Hadrian the Seventh. He provides the curious example of an artist rescued from obscurity by his biographer; many years after Rolfe’s death A.J.A. Symons wrote a colourful biographical fantasy, The Quest for Corvo (1934), the publication of which marked the beginning ...
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Corvo Island (island, Portugal)
volcanic island, northernmost of the Azores, east-central North Atlantic. With an area of 6.8 square miles (17.6 square km), it rises to 2,549 feet (777 m) at Mount Gordo. Lying only 10 miles (16 km) north of Flores, it suffers for nine months of the year from winter weather. Air links have eased the island’s former isolation. The island has only one town, Vila Corvo (sou...
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corvus (ship part)
...land warfare to sea and forced the Carthaginians to fight on Roman terms. Each Roman galley had fitted in the bow a hinged gangplank with a grappling spike or hook (the corvus) in the forward end, thus providing a boarding ramp. They added to the crews many more marines than warships usually carried....
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Corvus (bird)
any of various glossy black birds found in most parts of the world, with the exception of southern South America. Crows are generally smaller and not as thick-billed as ravens, which belong to the same genus. A large majority of the 40 or so Corvus species are known as crows, and the name has been applied to other, unrelated birds. Large crows m...
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Corvus albus (bird)
...western Europe and eastern Asia and in the northern British Isles. Other crows include the house crow (C. splendens) of the Indian subcontinent (introduced in eastern Africa); the pied crow (C. albus), with white nape and breast, of tropical Africa; and the fish crow (C. ossifragus) of southeastern and central North America. Other members of the......
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Corvus brachyrhynchos (bird)
...of the world, with the exception of southern South America. Crows are generally smaller and not as thick-billed as ravens, which belong to the same genus. A large majority of the 40 or so Corvus species are known as crows, and the name has been applied to other, unrelated birds. Large crows measure about 0.5 metre (20 inches) long, with wingspans that can reach 1 metre (39......
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Corvus corax
The common raven (C. corax) is the largest of the perching birds (see passeriform): it reaches a length of up to 66 cm (26 inches) and has a wingspan of more than 1.3 metres (4 feet). (Some magpies and the lyrebird exceed the raven in length, but their bodies are smaller.) In the white-necked raven (C. cryptoleucus) of western North America, the bases of the ne...
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Corvus corone (bird)
Some common crows are the American crow (C. brachyrhynchos) of North America and the carrion crow (C. corone) of Europe and most of Asia. A subspecies of the carrion crow with gray on the back of the neck and breast is called the hooded crow (C. corone cornix). Sometimes considered a separate species, it is found between western Europe and eastern......
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Corvus corone cornix (bird)
...of North America and the carrion crow (C. corone) of Europe and most of Asia. A subspecies of the carrion crow with gray on the back of the neck and breast is called the hooded crow (C. corone cornix). Sometimes considered a separate species, it is found between western Europe and eastern Asia and in the northern British Isles. Other crows include the......
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Corvus corone corone (Corvus corone corone)
Some common crows are the American crow (C. brachyrhynchos) of North America and the carrion crow (C. corone) of Europe and most of Asia. A subspecies of the carrion crow with gray on the back of the neck and breast is called the hooded crow (C. corone cornix). Sometimes considered a separate species, it is found between western Europe and eastern......
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Corvus cryptoleucus (bird)
...it reaches a length of up to 66 cm (26 inches) and has a wingspan of more than 1.3 metres (4 feet). (Some magpies and the lyrebird exceed the raven in length, but their bodies are smaller.) In the white-necked raven (C. cryptoleucus) of western North America, the bases of the neck feathers are white. Other species of ravens—some with white or brown markings—occur in...
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Corvus dauuricus (bird)
...and blotched. The bird’s cry sounds like its name: “chak.” The species ranges from the British Isles to central Asia; eastward it is replaced by the white-breasted, white-collared Daurian jackdaw (C. dauuricus)....
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Corvus frugilegus (bird)
(Corvus frugilegus), the most abundant Eurasian bird of the crow family Corvidae. It resembles the carrion crow in size (45 cm [18 inches]) and in black coloration, but the adult rook usually has shaggy thigh feathers and has bare white skin at the base of its sharp bill. The species ranges discontinuously from England to Iran and Manchuria and is migratory. Rooks nest i...
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Corvus monedula (bird)
(species Corvus monedula), crowlike black bird with gray nape and pearly eyes of the family Corvidae (order Passeriformes). Jackdaws, which are 33 cm (13 inches) long, breed in colonies in tree holes, cliffs, and tall buildings: their flocks fly in formation around the site. They lay four to six light, greenish blue eggs that are spotted and blotched. The bird’s c...
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Corvus ossifragus (bird)
...house crow (C. splendens) of the Indian subcontinent (introduced in eastern Africa); the pied crow (C. albus), with white nape and breast, of tropical Africa; and the fish crow (C. ossifragus) of southeastern and central North America. Other members of the genus Corvus not called crows are the raven, jackdaw, and rook....
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Corvus splendens (bird)
...hooded crow (C. corone cornix). Sometimes considered a separate species, it is found between western Europe and eastern Asia and in the northern British Isles. Other crows include the house crow (C. splendens) of the Indian subcontinent (introduced in eastern Africa); the pied crow (C. albus), with white nape and breast, of tropical Africa; and the.....
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Corwin, Edward Samuel (American political scientist)
American political scientist and authority on U.S. political and constitutional law....
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Corwin, Thomas (American politician)
politician who foresaw the impending conflict between the U.S. North and South over slavery; his efforts to help avert it, however, were in vain....
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Coryanthes (plant)
any of about 42 species of tropical American orchid (family Orchidaceae) that has an unusual pollination mechanism. One to five flowers are borne on a pendent stem that arises from the base of the tall pseudobulbs (bulblike stems). A fluid secreted by specialized glands collects in the column, which has a spoutlike opening just below the pollen packets. An insect attracted by th...
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Corybantes (mythology)
sons of Apollo and the Muse Thalia, mythical attendants of the ancient Oriental and Greco-Roman deity the Great Mother of the Gods. They were often identified or confused with the Cretan Curetes (who protected the infant Zeus from detection by his father, Cronus) and were distinguished only by their Asiatic origin and by the more pronouncedly orgiastic nature of their rites. Acc...
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Corydalidae (insect)
any of a group of insects (order Megaloptera) that are usually large and have four net-veined wings of similar size and shape. Dobsonflies are found in North and South America, Asia, Australia, and Africa....
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Corydalis (plant genus)
genus of about 300 species of plants in the poppy family (Papaveraceae) native to North Temperate areas and southern Africa. Most are weak-stemmed perennial garden plants with underground tubers and lobed or finely dissected leaves, although the climbing corydalis (C. claviculata) of Great Britain is an annual with short sprays of cream-coloured, tubular flowers. Yellow corydalis (C. lut...
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Corydalis claviculata (plant)
...family (Papaveraceae) native to North Temperate areas and southern Africa. Most are weak-stemmed perennial garden plants with underground tubers and lobed or finely dissected leaves, although the climbing corydalis (C. claviculata) of Great Britain is an annual with short sprays of cream-coloured, tubular flowers. Yellow corydalis (C. lutea) of southern Europe is a popular......
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Corydalis lutea (plant)
...underground tubers and lobed or finely dissected leaves, although the climbing corydalis (C. claviculata) of Great Britain is an annual with short sprays of cream-coloured, tubular flowers. Yellow corydalis (C. lutea) of southern Europe is a popular garden perennial with 22-centimetre- (about 9-inch-) tall sprays of yellow tubular blooms. Native North American species include......
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Corydalis sempervirens (plant)
...corydalis (C. lutea) of southern Europe is a popular garden perennial with 22-centimetre- (about 9-inch-) tall sprays of yellow tubular blooms. Native North American species include pale or pink corydalis, or Roman wormwood (C. sempervirens), a 60-centimetre-tall annual with pink, yellow-tipped flowers; and golden corydalis (C. aurea), a 15-centimetre annual....
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Corydalus cornutus (insect)
Corydalus cornutus is a large insect with a wingspread of about 13 cm (5 inches). The jaws (or mandibles) are considerably larger in the male than in the female and are characteristic of the insect’s sexual dimorphism. They may exceed 2.5 cm (1 inch) in the male. Females lay up to about 3,000 eggs in whitish clusters near streams. After the eggs hatch, the young larvae crawl to the w...
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Corydon (work by Gide)
...war a great change took place in Gide, and his face began to assume the serene expression of his later years. By the decision involved in beginning his autobiography and the completion in 1918 of Corydon (a Socratic dialogue in defense of homosexuality begun earlier), he had achieved at last an inner reconciliation. Corydon’s publication in 1924 was disastrous, though, and ...
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Corydon (Indiana, United States)
town, seat (1808) of Harrison county, southern Indiana, U.S., 25 miles (40 km) west of Louisville, Ky. It was settled in about 1808 on land originally owned by General William Henry Harrison, governor of Indiana Territory (1800–12), who named the town for a shepherd in a popular song of the times, “Pastoral Elegy.” It was the capital of the Indiana Territory...
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Corydon Capitol State Historic Site (statehouse, Indiana, United States)
...state from 1816 until the capital was moved to Indianapolis in 1825. The convention that drafted the first constitution for Indiana met there in June 1816; the first statehouse is preserved as the Corydon Capitol State Historic Site. During the American Civil War the town was attacked by Confederate Brigadier General John Hunt Morgan’s cavalry (July 9, 1863); “Morgan’s Raid...
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Corydon Capitol State Memorial (statehouse, Indiana, United States)
...state from 1816 until the capital was moved to Indianapolis in 1825. The convention that drafted the first constitution for Indiana met there in June 1816; the first statehouse is preserved as the Corydon Capitol State Historic Site. During the American Civil War the town was attacked by Confederate Brigadier General John Hunt Morgan’s cavalry (July 9, 1863); “Morgan’s Raid...
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corydoras (catfish)
any of numerous small South American catfishes of the genus Corydoras, family Callichthyidae, commonly kept as attractive scavengers in tropical aquariums. The species, identified by two rows of overlapping armour plates on each side, are hardy, unaggressive fishes commonly about 7.5 cm (3 inches) or less in length....
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Corydoras aeneus (fish)
There are more than 100 species. Popular aquarium pets include: the bronze corydoras (C. aeneus), a common, metallic brown or green fish with a large dark patch on its body; the dwarf, or pygmy, corydoras (C. hastatus), an active, 4-centimetre-long species with a black band on each side; the leopard corydoras (C. julii), a silvery catfish patterned in black with stripes,......
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Corydoras hastatus (fish)
There are more than 100 species. Popular aquarium pets include: the bronze corydoras (C. aeneus), a common, metallic brown or green fish with a large dark patch on its body; the dwarf, or pygmy, corydoras (C. hastatus), an active, 4-centimetre-long species with a black band on each side; the leopard corydoras (C. julii), a silvery catfish patterned in black with stripes,......
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Corydoras julii (fish)
...metallic brown or green fish with a large dark patch on its body; the dwarf, or pygmy, corydoras (C. hastatus), an active, 4-centimetre-long species with a black band on each side; the leopard corydoras (C. julii), a silvery catfish patterned in black with stripes, short lines, and numerous small spots; and the peppered corydoras (C. paleatus), a pale, yellowish brown......
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Corydoras paleatus (fish)
...4-centimetre-long species with a black band on each side; the leopard corydoras (C. julii), a silvery catfish patterned in black with stripes, short lines, and numerous small spots; and the peppered corydoras (C. paleatus), a pale, yellowish brown fish marked with dark spots and streaks....
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Coryell, C. D. (American chemist)
...not detected in nature. Conclusive chemical proof of the existence of promethium, the last of the rare-earth elements to be discovered, was obtained (1947) by J.A. Marinsky, L.E. Glendenin, and C.D. Coryell, who isolated the radioactive isotope promethium-147 (2.7-year half-life) from uranium fission products at the research site at Oak Ridge, Tenn. Identification was firmly established by......
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Coryell, Larry (American musician)
...jazz audiences since the swing era ended in the mid-1940s. The style was also known as crossover because sales of the music crossed over from the jazz market to the popular music market. Guitarist Larry Coryell was popular in the early years of jazz-rock fusion; guitarist Pat Metheny, with his pastoral harmonies, has been a star since the late 1970s....
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Corylopsis (plant)
any of about 10 species of the genus Corylopsis, deciduous shrubs or small trees of the witch hazel family (Hamamelidaceae). They are native to eastern Asia and the Himalayas but are planted elsewhere as ornamentals. Their bell-shaped creamy to yellow fragrant flowers appear in hanging clusters in early spring before the leaves. Especially early are the creamy flowers of the buttercup wint...
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Corylopsis glabrescens (plant)
...of two or three on the densely branched shrubs up to 2 m (6 feet) tall. Spike winter hazel (C. spicata), about the same height, blooms about the same time but bears lemon-yellow flowers. The fragrant winter hazel (C. glabrescens), up to 6 m tall, is somewhat hardier than the aforementioned species....
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Corylopsis pauciflora (plant)
...are planted elsewhere as ornamentals. Their bell-shaped creamy to yellow fragrant flowers appear in hanging clusters in early spring before the leaves. Especially early are the creamy flowers of the buttercup winter hazel (C. pauciflora), which appear in clusters of two or three on the densely branched shrubs up to 2 m (6 feet) tall. Spike winter hazel (C. spicata), about the same...
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Corylopsis spicata (plant)
...leaves. Especially early are the creamy flowers of the buttercup winter hazel (C. pauciflora), which appear in clusters of two or three on the densely branched shrubs up to 2 m (6 feet) tall. Spike winter hazel (C. spicata), about the same height, blooms about the same time but bears lemon-yellow flowers. The fragrant winter hazel (C. glabrescens), up to 6 m tall, is......
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Corylus (tree)
any of about 15 species of shrubs and trees constituting the genus Corylus in the birch family (Betulaceae) and the edible nuts they produce. The former common name for the genus was hazel; various species were termed filbert, hazelnut, or cobnut, depending on the relative length of the nut to its husk. This distinction was found to be misleading, and filbert became the common name for the ...
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Corylus americana (plant)
...nuts are produced by two Eurasian trees, the European filbert (Corylus avellana) and the giant filbert (C. maxima), and by hybrids of these species with two American shrubs, the American filbert (C. americana) and the beaked filbert (C. cornuta), popularly called hazelnuts. The large cobnut is a variety of the European filbert; Lambert’s filbert is a variety o...
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Corylus avellana (plant)
Choice nuts are produced by two Eurasian trees, the European filbert (Corylus avellana) and the giant filbert (C. maxima), and by hybrids of these species with two American shrubs, the American filbert (C. americana) and the beaked filbert (C. cornuta), popularly called hazelnuts. The......
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