- Ordinary People (film by Redford [1980])
Robert Redford: …launched his directing career with Ordinary People (1980), a family drama adapted from a novel by Judith Guest. The film won best picture at the Academy Awards, and Redford himself won an Oscar for best director. Of Redford’s first seven directorial efforts, The Milagro Beanfield War (1988), The Horse Whisperer,…
- ordinary portland cement (cement)
cement: Types of portland cement: …for Testing and Materials (ASTM): ordinary (Type I), modified (Type II), high-early-strength (Type III), low-heat (Type IV), and sulfate-resistant (Type V). In other countries Type II is omitted, and Type III is called rapid-hardening. Type V is known in some European countries as Ferrari cement.
- ordinary ray (optics)
double refraction: …the other ray (called the ordinary ray) passes through the medium unchanged.
- ordinary shares (finance)
security: Stock: Common stock, in some countries called ordinary shares, represents a residual interest in the earnings and assets of a corporation. Whereas distributions to bonds or preferred stock are ordinarily fixed, dividends paid on common stock are set at the time of payment by the directors…
- ordinary spiral galaxy (astronomy)
galaxy: Spiral galaxies: …divided into two parallel classes: normal spirals and barred spirals. The normal spirals have arms that emanate from the nucleus, while barred spirals have a bright linear feature called a bar that straddles the nucleus, with the arms unwinding from the ends of the bar. The nucleus of a spiral…
- Ordinary Woman, An (poetry by Clifton)
Lucille Clifton: …About the Earth (1972) and An Ordinary Woman (1974). From 1982 to 1983 she was a visiting writer at Columbia University School of the Arts and at George Washington University. Thereafter she taught literature and creative writing at the University of California at Santa Cruz and then at St. Mary’s…
- Ordinatio (work by Ockham)
William of Ockham: Early life: …Sentences (a commentary known as Ordinatio) was actually written by Ockham himself. His opinions aroused strong opposition from members of the theological faculty of Oxford, however, and he left the university without obtaining his master’s degree in theology. Ockham thus remained, academically speaking, an undergraduate—known as an inceptor (“beginner”) in…
- Ordinatio (work by Duns Scotus)
Scholasticism: Early Scholastic period: …John Duns Scotus in his Opus Oxoniense, which, in spite of being a work of extremely personal cast, was outwardly framed as a commentary on the “Master of Sentences.”
- Ordinatio imperii (decree of Louis the Pious)
Louis I: The challenges of empire: …blueprint for this empire, the Ordinatio imperii of 817, attempted to deal with the centrifugal realities of the regions and Louis’s own family when it prescribed how to maintain the unity of the empire while dividing it among his three sons. Lothar (b. 795) became coemperor with Louis; Pippin (b.…
- ordination (religion)
ordination, in Christian churches, a rite for the dedication and commissioning of ministers. The essential ceremony consists of the laying of hands of the ordaining minister upon the head of the one being ordained, with prayer for the gifts of the Holy Spirit and of grace required for the carrying
- Ordine Nuovo (Italian intellectual group)
Italy: Economic and political crisis: the two red years: …radical approach, and by the New Order (Ordine Nuovo) group of intellectuals based in Turin around Antonio Gramsci. These Socialists continually proclaimed the need for revolution and their desire to “do as in Russia.” Reformist leaders, such as Turati, were isolated and vilified. However, the party did little to actually…
- Ordine nuovo, L’ (Italian periodical)
Palmiro Togliatti: …helped launch a left-wing weekly, L’Ordine nuovo (“New Order”), which became a rallying point for the Communist wing that broke away from the Socialist Party in 1921. Beginning in 1922 Togliatti edited Il Comunista and in April 1924 became a member of the Central Committee of the Communist Party. While…
- Ordnance Manual of 1862 (United States)
rocket and missile system: The 19th century: Ordnance Manual of 1862 lists 16-pound Hale rockets with a range of 1.25 miles.
- Ordnance Survey International (British governmental agency)
Ordnance Survey International, former surveying, mapping, and aerial photography agency (1946–2001) of the British government, which provided advice on technical matters concerning all aspects of surveying and mapping. The maps created by the agency were produced using aerial photography and
- Ordnung (Amish behavioral code)
Amish: Beliefs and way of life: …code of behaviour called the Ordnung, and shunning (Meidung) remains an integral way in which the community deals with disobedient members. In formal religious doctrine, the Amish differ little from the Mennonites. Holy Communion is celebrated twice each year, and foot washing is practiced by both groups. Persons are baptized…
- Ordnungspolizei (Nazi police agencies)
Ordnungspolizei, uniformed police agencies of the Third Reich. They became an integral part of the SS and police bureaucracy in Nazi Germany and were key participants in the conduct of mass murder and atrocities in the occupied areas under German control during World War II. Organizations falling
- Ordo Clericorum Regularium Matris Dei (Roman Catholic order)
Saint John Leonardi: …founder of the Roman Catholic Ordo Clericorum Regularium Matris Dei (Clerks Regular of the Mother of God), whose members were commonly called Leonardini; the order was distinguished for learning and was originally devoted to combatting Protestantism and to promoting the Counter-Reformation.
- Ordo Clericorum Regularium Pauperum Matris Dei Scholarum Piarum (Roman Catholic order)
Saint Joseph Calasanz: …the Pious Schools), popularly called Piarists. The Piarists are a religious teaching order that, in addition to the usual vows of poverty, chastity, and obedience, practice a fourth vow—the special care of youth.
- Ordo Gilbertinorum Canonicorum (Roman Catholic order)
Saint Gilbert of Sempringham: …or Sempringham Order), commonly called Gilbertines, the only medieval religious order of English origin.
- Ordo Sempringensis (Roman Catholic order)
Saint Gilbert of Sempringham: …or Sempringham Order), commonly called Gilbertines, the only medieval religious order of English origin.
- Ördögi Kisértetekről (work by Bornemisza)
Hungarian literature: Renaissance and Reformation: His volume Ördögi Kisértetekről (1578; “On the Temptations of the Devil”) offered an interesting consideration of moral and sexual problems in the 16th century. A poem of farewell, written on leaving the country, was one of the gems of early Hungarian poetry. His Tragoedia magyar nyelven (1558;…
- Ordóñez Araujo, Antonio Jiménez (Spanish matador)
Antonio Ordóñez was a Spanish matador, generally considered to be the first-ranked bullfighter of the 1950s and ’60s. Antonio Ordóñez was the son of Cayetano Ordóñez, called “Niño de la Palma,” who was the prototype for Pedro Romero, the matador in Ernest Hemingway’s novel The Sun Also Rises.
- Ordóñez, Antonio (Spanish matador)
Antonio Ordóñez was a Spanish matador, generally considered to be the first-ranked bullfighter of the 1950s and ’60s. Antonio Ordóñez was the son of Cayetano Ordóñez, called “Niño de la Palma,” who was the prototype for Pedro Romero, the matador in Ernest Hemingway’s novel The Sun Also Rises.
- Ordóñez, Bartolomé (Spanish sculptor)
Bartolomé Ordóñez was a sculptor who was one of the originators of the Spanish school of Renaissance sculpture. Influenced by the masters of the Italian Renaissance, he evolved his own pure style, which was widely imitated after his early death. A member of a wealthy family, Ordóñez apparently
- Ordonnance Cabochienne (France [1413])
Simon Caboche: …that became known as the Ordonnance Cabochienne, named for Caboche, which provided for the control of affairs by the deliberations of the political council, of the Parlement, or of the Chambre des Comptes and for the election of all administrative officials by one or another of those organs. Continued riots,…
- Ordonnance Civile (France [1667])
procedural law: Medieval European law: …by Louis XIV of the Ordonnance Civile, also known as Code Louis, a comprehensive code regulating civil procedure in all of France in a uniform manner. The Code Louis continued, with some improvements, many of the basic principles of procedure that had prevailed since the late Middle Ages.
- Ordonnance de Moulins (French history)
Michel de L’Hospital: …and in 1566 promoted the Ordonnance de Moulins, which went far to rectify many problems in judicial administration and also stipulated policies for the administration and centralization of the royal domain (crown lands). In September 1567 civil war broke out again, and Catherine lost confidence in L’Hospital’s policy of toleration.…
- Ordoño I (king of Asturias)
Mieres: …by a grant of King Ordoño I of Asturias in ad 857, has Romanesque columns and capitals. Cattle raising and forestry were the traditional activities of the town; modern-day Mieres is a mining and industrial centre with iron, sulfur, hard and soft coal, and mercury mines nearby. It also has…
- Ordoño II (king of Leon)
ʿAbd al-Raḥmān III: Campaigns against the Christians: An expedition commanded by Ordoño II, then vassal king of Galicia and later king of Leon, into Muslim territory in the summer of 913, especially his sack of Evora (Talavera) and the massacre of its Muslim population, produced widespread resentment in Muslim Spain. ʿAbd al-Raḥmān decided to counterattack, which…
- Ordoño IV (king of Leon)
Sancho I: …and replaced by his cousin Ordoño IV. Sancho sought help from the Umayyad caliph ʿAbd ar-Raḥmān III, who helped him regain his throne in 960.
- Ordos Gaoyuan (plateau, China)
Ordos Plateau, plateau in the southern section of the Inner Mongolia Autonomous Region, northern China. The Ordos fills the area inside the great northern bend of the Huang He (Yellow River) and is bounded by the borders of Shaanxi province and of the Hui Autonomous Region of Ningxia, a frontier
- Ordos Plateau (plateau, China)
Ordos Plateau, plateau in the southern section of the Inner Mongolia Autonomous Region, northern China. The Ordos fills the area inside the great northern bend of the Huang He (Yellow River) and is bounded by the borders of Shaanxi province and of the Hui Autonomous Region of Ningxia, a frontier
- Ordos, the (plateau, China)
Ordos Plateau, plateau in the southern section of the Inner Mongolia Autonomous Region, northern China. The Ordos fills the area inside the great northern bend of the Huang He (Yellow River) and is bounded by the borders of Shaanxi province and of the Hui Autonomous Region of Ningxia, a frontier
- Ordosian tradition (archaeology)
Stone Age: East and Southeast Asia: Collectively known as the Ordosian, these materials are of Upper Pleistocene age. Typical of the Ordosian are blade implements of various types, points and scrapers of Mousterian-like appearance, and pebble tools of Zhoukoudianian tradition. This development was originally classified as Moustero-Aurignacian, but it later became apparent that it had…
- Ordovices (people)
United Kingdom: The conquest: …struggle with the Silures and Ordovices. The Roman forces were strengthened by the addition of Legion XX, released for this purpose by the foundation of a veteran settlement (colonia) at Camulodunum in the year 49. The colonia would form a strategic reserve as well as setting the Britons an example…
- Ordovician Period (geochronology)
Ordovician Period, in geologic time, the second period of the Paleozoic Era. It began 485.4 million years ago, following the Cambrian Period, and ended 443.8 million years ago, when the Silurian Period began. Ordovician rocks have the distinction of occurring at the highest elevation on Earth—the
- Ordovician radiation (paleontology)
Ordovician radiation, an interval of intense diversification of marine animal life that unfolded over tens of millions of years during the Ordovician Period (485.4 million to 443.4 million years ago) of geologic time. The interval was characterized by the emergence of organisms that would come to
- Ordovician-Silurian extinction (mass extinction)
Ordovician-Silurian extinction, global mass extinction event occurring during the Hirnantian Age (445.2 million to 443.8 million years ago) of the Ordovician Period and the subsequent Rhuddanian Age (443.8 million to 440.8 million years ago) of the Silurian Period that eliminated an estimated 85
- Ordre de la Toison d’Or, L’ (European knighthood order)
The Order of the Golden Fleece, order of knighthood founded in Burgundy in 1430 and associated later especially with Habsburg Austria and with Spain. The order was founded by Philip III the Good, duke of Burgundy, at Bruges in Flanders in 1430, to commemorate his wedding there to Isabella of
- Ordre des Avocats (French jurisprudence)
legal profession: Social role: …Elizabethan times, and the French Ordre des Avocats was established (14th century) by feudal aristocrats in circumstances reminiscent of early Rome—including an insistence on receiving gifts rather than fees. The early Italian doctors of civil and canon law (12th–15th centuries) were revered throughout Europe. In England and the countries influenced…
- Ordre National de la Légion d’Honneur (French society)
Legion of Honour, premier order of the French republic, created by Napoleon Bonaparte, then first consul, on May 19, 1802, as a general military and civil order of merit conferred without regard to birth or religion provided that anyone admitted swears to uphold liberty and equality. Napoleon’s
- Ordre National des Avocats de Tunisie (Tunisian organization)
National Dialogue Quartet: …Tunisienne du Travail; UGTT), the Tunisian Order of Lawyers (Ordre National des Avocats de Tunisie), the Tunisian Confederation of Industry, Trade and Handicrafts (Union Tunisienne de l’Industrie, du Commerce et de l’Artisinat; UTICA), and the Tunisian Human Rights League (La Ligue Tunisienne pour la Défense des Droits de l’Homme; LTDH)—that…
- Ordu (Turkey)
Ordu, city and port, northern Turkey, on the Black Sea. It lies at the mouth of the Melet River on the eastern slopes of Boztepe (1,800 feet [550 metres]), a high hill that protects it against storms from the northwest. Ordu was the site of ancient Cotyora, founded by Greek colonists from Sinope
- Ordway Prize (American art and museum prize)
Cildo Meireles: In 2008 Meireles won the Ordway Prize, an unrestricted gift of $100,000. Administered by the New Museum and the Creative Link for the Arts, in New York City, and named for naturalist and philanthropist Katherine Ordway, the prize was awarded biennially and simultaneously to two individuals in mid-career, an artist…
- Ordways, The (novel by Humphrey)
American literature: Southern fiction: …from the Hill (1958) and The Ordways (1965). The Moviegoer (1961) and The Last Gentleman (1966) established Walker Percy as an important voice in Southern fiction. Their musing philosophical style broke sharply with the Southern gothic tradition and influenced later writers such as Richard Ford in
- Ordyn-Nashchokin, Afanasy Lavrentyevich (Russian statesman)
Afanasy Lavrentyevich Ordyn-Nashchokin was a statesman and diplomat who became the chief adviser on foreign affairs to Tsar Alexis of Russia (ruled 1645–76). The son of a petty landowner, Ordyn-Nashchokin received a good education in the relatively cosmopolitan environment of Pskov. During the
- Ordzhonikidze (Russia)
Vladikavkaz, city and capital of North Ossetia republic, southwestern Russia. It lies along the Terek River and on the northern slopes of the Caucasus Mountains. Founded in 1784, Vladikavkaz was designed as the key fortress to hold the Georgian Military Highway through the Terek River valley and
- Ordzhonikidze, Grigory Konstantinovich (Soviet government official)
Grigory Konstantinovich Ordzhonikidze was a communist leader who played a major role in bringing Georgia under Soviet rule and in industrializing the Soviet Union. Having joined the Bolshevik faction of the Russian Social Democratic Workers’ Party in 1903, Ordzhonikidze was active in the
- Ordzhonikidze, Sergo (Soviet government official)
Grigory Konstantinovich Ordzhonikidze was a communist leader who played a major role in bringing Georgia under Soviet rule and in industrializing the Soviet Union. Having joined the Bolshevik faction of the Russian Social Democratic Workers’ Party in 1903, Ordzhonikidze was active in the
- ore (mining)
ore, a natural aggregation of one or more minerals that can be mined, processed, and sold at a profit. An older definition restricted usage of the word ore to metallic mineral deposits, but the term has expanded in some instances to include nonmetallics. Although more than 2,800 mineral species
- ore body (geology)
mineral deposit: …a profit is called an ore deposit, and in an ore deposit the assemblage of ore minerals plus gangue is called the ore.
- ore deposit (geology)
mineral deposit: …a profit is called an ore deposit, and in an ore deposit the assemblage of ore minerals plus gangue is called the ore.
- ore development (mining)
mining: Underground mining: The first is development—that is, preparing the ore blocks for mining—and the second is production, or stoping, itself. Ore development is generally much more expensive on a per-ton basis than stoping, so that every effort is made to maximize the amount of stoping for a given amount of…
- ore dressing (metallurgy)
mineral processing, art of treating crude ores and mineral products in order to separate the valuable minerals from the waste rock, or gangue. It is the first process that most ores undergo after mining in order to provide a more concentrated material for the procedures of extractive metallurgy.
- ore mineral
mineral deposit: …are commonly referred to as ore minerals. Ore minerals tend to be concentrated in small, localized rock masses that form as a result of special geologic processes, and such local concentrations are called mineral deposits. Mineral deposits are what prospectors seek. The terms ore mineral and mineral deposit were originally…
- Ore Mountains (mountain range, Europe)
Ore Mountains, range of hills bounding the Bohemian Massif, extending 100 miles (160 km) along the German-Czech border, and reaching an average width of 25 miles (40 km). The Bohemian (southeastern) side of the range has a steep scarp face (2,000 to 2,500 feet [600 to 750 metres] high in places);
- ore pass
mining: Vertical openings: shafts and raises: …vertical or near-vertical openings called ore passes, through which it falls by gravity to the lowest level in the mine. There it is crushed, stored in an ore bin, and charged into skips at a skip-filling station. In the head frame on the surface, the skips dump their loads and…
- ore processing
metallurgy: Extractive metallurgy: Following separation and concentration by mineral processing, metallic minerals are subjected to extractive metallurgy, in which their metallic elements are extracted from chemical compound form and refined of impurities.
- ore reserve
mining: …a profit is termed the ore reserve. As the selling price of the mineral rises or the extraction costs fall, the proportion of the mineral inventory classified as ore increases. Obviously, the opposite is also true, and a mine may cease production because (1) the mineral is exhausted or (2)…
- Ore’aḥ Nataʿ (work by Agnon)
S.Y. Agnon: …novel, Ore’aḥ Nataʿ Lalun (1938; A Guest for the Night), describes the material and moral decay of European Jewry after World War I. His third and perhaps greatest novel, ʿTmol shilshom (1945; “The Day Before Yesterday”), examines the problems facing the westernized Jew who immigrates to Israel. This is neither…
- Oré, Pierre-Cyprien (French surgeon)
anesthesia: …in 1872 by French surgeon Pierre-Cyprien Oré, who used chloral hydrate to produce general anesthesia. Cocaine was used as a local anesthetic beginning in 1884 and as a spinal anesthetic by German surgeon August Karl Gustav Bier in 1898. Synthetic agents began to be introduced in the middle of the…
- Oread (Greek mythology)
nymph: The Oreads (oros, “mountain”) were nymphs of mountains and grottoes; the Napaeae (nape, “dell”) and the Alseids (alsos, “grove”) were nymphs of glens and groves; the Dryads or Hamadryads presided over forests and trees.
- Oreamnos americanus (mammal)
mountain goat, (Oreamnos americanus), a stocky North American ruminant of the family Bovidae (order Artiodactyla). Surefooted relatives of the chamois, mountain goats cling to steep cliffs in habitats ranging from ocean shores to glaciated mountain tops. They are agile, methodical climbers, adapted
- Oreaster reticulatus (sea star)
sea star: …largest West Indies sea star, Oreaster reticulatus, is sometimes 50 cm (20 inches) across. Members of the chiefly Indo-Pacific genus Linckia can grow a new individual from a small piece of a single arm.
- Örebro (county, Sweden)
Örebro, län (county) of south-central Sweden. It extends from the Bergslagen mining region in the north to Lake Hjalmar in the east and Lake Vätter in the south. It comprises the traditional landskap (province) of Närke and parts of those of Västmanland and Värmland. The län has a number of lakes
- Örebro (Sweden)
Örebro, town and capital of Örebro län (county), south-central Sweden. Örebro lies along the Svartån River at its entrance into Lake Hjalmar. One of Sweden’s oldest towns, it was already a commercial centre in the 13th century and played a prominent part in Swedish history. Örebro was the residence
- Orechovo-Zujevo (Russia)
Orekhovo-Zuyevo, city in Moscow oblast (region), western Russia, east of Moscow city, along the Klyazma River. Formed in 1917 through the amalgamation of several industrial villages, Orekhovo-Zuyevo is one of the largest textile-manufacturing cities of Russia, specializing in cotton. Chemicals and
- Orectolobidae (fish family)
chondrichthyan: Annotated classification: Family Orectolobidae (wobbegongs) Distinguished by the presence of 2 dorsal fins, the origin of the 1st over or behind the pelvic fins; nostril connected with mouth by a deep groove, its anterior margin with a well-developed fleshy barbel (tentacle). Teeth small, with several cusps; development ovoviviparous…
- Orectolobiformes (fish)
carpet shark, (order Orectolobiformes), any of about 40 species of sharks possessing mottled patterns on the body that are evocative of carpet designs. They are found in all oceans but are concentrated in the Indo-Pacific and Australian regions. Many species are large, but they are not considered
- oregano (herb)
oregano, (Origanum vulgare), aromatic perennial herb of the mint family (Lamiaceae) known for its flavourful dried leaves and flowering tops. Oregano is native to the hills of the Mediterranean countries and western Asia and has naturalized in parts of Mexico and the United States. The herb has
- Oregenes Adamantius (Christian theologian)
Origen was the most important theologian and biblical scholar of the early Greek church. His greatest work is the Hexapla, which is a synopsis of six versions of the Old Testament. Origen was born of pagan parents, according to the Neoplatonist philosopher Porphyry, but of Christian parents,
- Oregon (state, United States)
Oregon, constituent state of the United States of America. Oregon is bounded to the north by Washington state, from which it receives the waters of the Columbia River; to the east by Idaho, more than half the border with which is formed by the winding Snake River and Hells Canyon; to the south by
- Oregon (Illinois, United States)
Oregon, city, seat (1836) of Ogle county, northern Illinois, U.S. It lies on the Rock River, about 95 miles (155 km) west of Chicago. Early inhabitants of the region included Potawatomi and Winnebago Indians. It was founded in 1833 by John Phelps, a sawmiller. Oregon’s economy is based largely on
- Oregon Agricultural College (university, Corvallis, Oregon, United States)
Oregon State University, public coeducational institution of higher learning in Corvallis, Oregon, U.S. It is a comprehensive research university with land-, sea-, space-, and sun-grant status. The university, which awards undergraduate, graduate, and professional degrees, comprises a graduate
- Oregon ash (tree)
ash: Major species: …of the Midwest, and the Oregon ash (F. latifolia) of the Pacific Northwest furnish wood of comparable quality that is used for furniture, interior paneling, and barrels, among other purposes. The Mexican ash (F. uhdei), a broad-crowned tree that is widely planted along the streets of Mexico City, reaches a…
- Oregon Caves National Monument (cave, Oregon, United States)
Oregon Caves National Monument, cave complex in the Siskiyou Mountains of southwestern Oregon, U.S., near the California border. Established in 1909, the monument occupies a surface area of 0.8 square mile (2 square km). It consists of a single cave comprising a series of chambers joined by
- Oregon City (Oregon, United States)
Oregon City, city, seat (1843) of Clackamas county, northwestern Oregon, U.S., at Willamette Falls (40 feet [12 metres] high) and the juncture of the Clackamas and Willamette rivers. It forms part of a tri-city complex, just southeast of Portland, that includes Gladstone and West Linn. In 1829–30
- Oregon Country (historical region, Canada-United States)
Hudson’s Bay Company: …the fur trade of the Oregon Country (present Oregon, Washington, Idaho, British Columbia, and parts of Montana and Wyoming). Increasing American immigration, starting in 1834 and continuing into the next decade, diminished the company’s influence in the southern part of the Oregon Country, and in 1846 the Oregon Country was…
- Oregon crabapple (plant)
crabapple: Major species: coronaria), Oregon crabapple (M. fusca), prairie crabapple (M. ioensis), and southern crabapple (M. angustifolia).
- Oregon grape (plant)
Oregon grape, any of several species of the genus Mahonia, evergreen shrubs of the barberry family (Berberidaceae) grown for their ornamental value. M. aquifolium, the typical Oregon grape, is 90 cm (3 feet) or more tall and is native to the Pacific coast of North America. It is most used for its
- Oregon Health and Science University (school, Portland, Oregon, United States)
Oregon Health and Science University, public, coeducational institution of higher learning in Portland, Oregon, U.S. It is specifically dedicated to biomedical research and patient medical care and to training health professionals, scientists, and engineers. The university comprises schools of
- Oregon Institute of Technology (institute, Klamath Falls, Oregon, United States)
Oregon: Education of Oregon: …encompasses two specialized universities: the Oregon Institute of Technology (1947), which has several campuses around the state, and Oregon Health and Science University (1887). The state has more than two dozen private colleges and universities, including Reed College (1909), in Portland; Willamette University (1842), in Salem; and Lewis and Clark…
- Oregon laurel (plant)
arbutus: Major species: Variously known as madrona, Pacific madrona, laurelwood, and Oregon laurel, A. menziesii occurs in western North America from British Columbia to California. It grows about 23 metres (75 feet) tall. The dark oblong glossy leaves are 5–15 cm (2–6 inches) long and are coloured grayish green beneath. The…
- Oregon maple (plant)
maple: The Oregon, or bigleaf, maple (A. macrophyllum) provides commercially valuable wood darker than that of other maples; it shows bright-orange fall foliage. The Sycamore maple (A. pseudoplatanus), an important shade and timber tree in Europe, has many ornamental varieties.
- Oregon myrtle (tree)
California laurel, (Umbellularia californica), aromatic evergreen tree of the laurel family (Lauraceae). It occurs on the Pacific coast of North America from Oregon to California and grows about 15 to 25 metres (50 to 80 feet) tall. A handsome tree, it is often grown in gardens and along avenues.
- Oregon National Forest (forest, Oregon, United States)
Mount Hood National Forest, mountainous, heavily forested region in northwestern Oregon, U.S. The forest starts about 20 miles (32 km) east of Portland and extends southward along the Cascade Range from the Columbia River for more than 60 miles (100 km). It covers some 1,667 square miles (4,318
- Oregon Question (North American history)
James Buchanan: Early political career: …border dispute with Britain over Oregon. Despite the 1844 campaign slogan of “Fifty-four forty or fight,” the matter was settled peaceably by treaty. In both situations the United States gained large tracts of territory. Buchanan had sought the nomination for president in 1844 but had ultimately thrown his support to…
- Oregon State College (university, Corvallis, Oregon, United States)
Oregon State University, public coeducational institution of higher learning in Corvallis, Oregon, U.S. It is a comprehensive research university with land-, sea-, space-, and sun-grant status. The university, which awards undergraduate, graduate, and professional degrees, comprises a graduate
- Oregon State University (university, Corvallis, Oregon, United States)
Oregon State University, public coeducational institution of higher learning in Corvallis, Oregon, U.S. It is a comprehensive research university with land-, sea-, space-, and sun-grant status. The university, which awards undergraduate, graduate, and professional degrees, comprises a graduate
- Oregon sturgeon (fish)
chondrostean: Distribution: …Oregon, or Sacramento sturgeon (A. transmontanus) inhabits the waters of the Pacific coast of North America from California to Alaska. The shovelnose sturgeons (genus Scaphirhynchus) occur in the Mississippi drainage system of North America. The Aral Sea shovelnose sturgeons (Pseudoscaphirhynchus) are found in rivers that drain into the
- Oregon swallowtail butterfly (butterfly)
community ecology: Specialization in parasites: …group, the Oregon swallowtail (Papilio oregonius), has become specialized to feed on tarragon sagebrush (Artemisia dracunculus), which is in the plant family Asteracaea (Compositae of some sources). Among the tiger swallowtail group, various members have become specialized to different plant hosts. The eastern tiger swallowtail (Papilio glaucus) has a…
- Oregon System (government, Oregon, United States)
Oregon: Constitutional framework: government collectively known as the Oregon System. In 1902 the concepts of initiative and referendum were introduced, by which voters are able to initiate and vote upon statutes or constitutional revisions; these were supplemented in 1908 by the system of recall, under which the removal of elected officials can be…
- Oregon Territory (historical region, Canada-United States)
Hudson’s Bay Company: …the fur trade of the Oregon Country (present Oregon, Washington, Idaho, British Columbia, and parts of Montana and Wyoming). Increasing American immigration, starting in 1834 and continuing into the next decade, diminished the company’s influence in the southern part of the Oregon Country, and in 1846 the Oregon Country was…
- Oregon Trail (historical trail, United States)
Oregon Trail, in U.S. history, an overland trail between Independence, Missouri, and Oregon City, near present-day Portland, Oregon, in the Willamette River valley. It was one of the two main emigrant routes to the American West in the 19th century, the other being the southerly Santa Fe Trail from
- Oregon Trail; Sketches of Prairie and Rocky-Mountain Life, The (book by Parkman)
Francis Parkman: Literary career.: …book, in later editions called The Oregon Trail; Sketches of Prairie and Rocky-Mountain Life, became one of the best-selling personal narratives of the 19th century.
- Oregon Treaty (United States [1846])
James K. Polk: Presidency of James K. Polk: …had been inflamed over the Oregon compromise of 1846. As these measures helped foreign trade, so the reenactment of the independent treasury system in 1846 helped in the solution of domestic financial problems.
- Oregon v. Mitchell (law case)
Twenty-sixth Amendment: …own voting-age requirements, and in Oregon v. Mitchell (1970) the U.S. Supreme Court upheld this claim.
- Oregon white oak (plant)
white oak: The Oregon white oak (Q. garryana), sometimes shrubby but often more than 24 m (80 feet) tall, has widespreading branches; it is an important timber tree of the Pacific coastal region.
- Oregon yew (plant)
Pacific yew, (Taxus brevifolia), an evergreen timber tree of the yew family (Taxaceae). It is the only commercially important yew native to North America, where it is found from Alaska to California. Usually between 5 and 15 metres (about 15 to 50 feet) tall, it sometimes reaches 25 metres. See
- Oregon, flag of (United States state flag)
U.S. state flag consisting of a dark blue field (background) with the phrase “State of Oregon,” the date 1859, and an emblem in golden yellow on the obverse side; on the reverse is a representation of a beaver in golden yellow.A number of U.S. state flags, based on the military colours of local