• 0-9
  • a
  • b
  • c
  • d
  • e
  • f
  • g
  • h
  • i
  • j
  • k
  • l
  • m
  • n
  • o
  • p
  • q
  • r
  • s
  • t
  • u
  • v
  • w
  • x
  • y
  • z
  • antinucleon (physics)

    annihilation: …and neutrons), for example, annihilate antinucleons (antiprotons and antineutrons), and the energy is also carried away in the form of particles such as pi-mesons and K-mesons and their corresponding antiparticles.

  • Antioch (medieval principality, Turkey)

    Antioch, a principality centred on the city of Antioch, founded by European Christians in territory taken from the Muslims in 1098, during the First Crusade. It survived as a European outpost in the East for nearly two centuries. Antioch’s territory included the well-fortified, predominantly

  • Antioch (modern and ancient city, south-central Turkey)

    Antioch, populous city of ancient Syria and now a major town of south-central Turkey. It lies near the mouth of the Orontes River, about 12 miles (19 km) northwest of the Syrian border. Antioch was founded in 300 bce by Seleucus I Nicator, a former general of Alexander the Great. The new city soon

  • Antioch (California, United States)

    Antioch, city, Contra Costa county, western California, U.S. Lying on the San Joaquin River, it was founded as Smith’s Landing in 1849. In 1851 it was renamed for the biblical Antioch, and it developed from a small agricultural community into a major industrial complex. Many national manufacturers

  • Antioch (ancient city, west-central Turkey)

    Antioch, ancient city in Phrygia, near the Pisidian border, close to modern Yalvaç, in west-central Turkey. Founded by Seleucus I Nicator (c. 358–281 bc), it was made a free city in 189 bc by the Romans, who took direct control about 25 bc; soon thereafter the emperor Augustus made it a colony with

  • Antioch College (university, Yellow Springs, Ohio, United States)

    Antioch University, private coeducational institution of higher learning founded in 1852 as Antioch College in Yellow Springs, Ohio, U.S. It is noted for its experimental curricula and work-study programs. Horace Mann was its first president, serving from 1853 until his death in 1859. Although the

  • Antioch Pisidian (ancient city, west-central Turkey)

    Antioch, ancient city in Phrygia, near the Pisidian border, close to modern Yalvaç, in west-central Turkey. Founded by Seleucus I Nicator (c. 358–281 bc), it was made a free city in 189 bc by the Romans, who took direct control about 25 bc; soon thereafter the emperor Augustus made it a colony with

  • Antioch University (university, Yellow Springs, Ohio, United States)

    Antioch University, private coeducational institution of higher learning founded in 1852 as Antioch College in Yellow Springs, Ohio, U.S. It is noted for its experimental curricula and work-study programs. Horace Mann was its first president, serving from 1853 until his death in 1859. Although the

  • Antioch, Council of (historical church council)

    Council of Antioch, (341 CE), a non-ecumenical Christian church council held at Antioch (modern Antakya in southeastern Turkey) on the occasion of the consecration of the emperor Constantine I’s Golden Church there. It was the first of several 4th-century councils that attempted to replace orthodox

  • Antioch, Orthodox Church of (Eastern Orthodoxy)

    Greek Orthodox Patriarchate of Antioch and All the East, autocephalous (ecclesiastically independent) Eastern Orthodox patriarchate, third in honorific rank after the churches of Constantinople and Alexandria; it is the largest Arab Christian church in the Middle East. The authority of the Greek O

  • Antioch, School of (school, Syria)

    School of Antioch, Christian theological institution in Syria, traditionally founded in about ad 200, that stressed the literal interpretation of the Bible and the completeness of Christ’s humanity, in opposition to the School of Alexandria (see Alexandria, School of), which emphasized the

  • Antioch, See of (religion)

    Eastern Orthodoxy: The Eastern Orthodox Church in the Middle East: …the ancient sees of Alexandria, Antioch, and Jerusalem are remnants of the Byzantine imperial past, but under the present conditions they still possess many opportunities of development: Alexandria as the centre of emerging African communities (see below The Orthodox diaspora and missions); Antioch as the largest Arab Christian group, with…

  • Antioch, Siege of (First Crusade [1097–1098])

    Siege of Antioch, (20 October 1097–28 June 1098). This marked the arrival of the First Crusade in the Holy Land. Events set a pattern of betrayal, massacre, and heroism that was to mark future campaigns. By capturing Antioch, the crusaders secured lines of supply and reinforcement to the west.

  • Antiocheia Pisidias (ancient city, west-central Turkey)

    Antioch, ancient city in Phrygia, near the Pisidian border, close to modern Yalvaç, in west-central Turkey. Founded by Seleucus I Nicator (c. 358–281 bc), it was made a free city in 189 bc by the Romans, who took direct control about 25 bc; soon thereafter the emperor Augustus made it a colony with

  • Antiochene rite (Christianity)

    Antiochene rite, the system of liturgical practices and discipline observed by Syrian Monophysites (Jacobites), the Malabar Christians of Kerala, India (Jacobites), and three Eastern-rite communities of the Roman Catholic church: Catholic Syrians, Maronites, and Malankarese Christians of Kerala.

  • Antiochus and Stratonice (painting by David)

    Jacques-Louis David: Formative years: His prize-winning work, Antiochus and Stratonice, reveals that at this point he could still be influenced slightly by the Rococo charm of the painter François Boucher, who had been a family friend.

  • Antiochus Epimanes (Seleucid king)

    Antiochus IV Epiphanes, (Greek: “God Manifest”) Seleucid king of the Hellenistic Syrian kingdom who reigned from 175 to 164 bc. As a ruler he was best known for his encouragement of Greek culture and institutions. His attempts to suppress Judaism brought on the Wars of the Maccabees. Antiochus was

  • Antiochus Hierax (Seleucid king)

    Antiochus Hierax, younger brother of Seleucus II, heir to the Seleucid dominions in the Middle East. During his brother’s war with Egypt, he declared independence in Anatolia and attempted to take over the throne. Antiochus Hierax and Seleucus II, were the sons of Antiochus II’s former wife,

  • Antiochus I Soter (Seleucid king)

    Antiochus I Soter, king of the Seleucid kingdom of Syria, who ruled about 292–281 bc in the east and 281–261 over the whole kingdom. Under great external pressures, he consolidated his kingdom and encouraged the founding of cities. Antiochus was the son of Seleucus I, founder of the Seleucid

  • Antiochus II Theos (Seleucid king)

    Antiochus II Theos, king of the Seleucid dominions in the Middle East, who succeeded his father, Antiochus I, in 261 bc and spent much of his reign at war with Egypt, recovering much territory in Anatolia. Finding a willing ally in Antigonus, ruler of Macedonia, who had suffered at the hands of

  • Antiochus III the Great (Seleucid king)

    Antiochus III the Great, Seleucid king of the Hellenistic Syrian Empire from 223 bce to 187, who rebuilt the empire in the East but failed in his attempt to challenge Roman ascendancy in Europe and Asia Minor. He reformed the empire administratively by reducing the provinces in size, established a

  • Antiochus IV Epiphanes (Seleucid king)

    Antiochus IV Epiphanes, (Greek: “God Manifest”) Seleucid king of the Hellenistic Syrian kingdom who reigned from 175 to 164 bc. As a ruler he was best known for his encouragement of Greek culture and institutions. His attempts to suppress Judaism brought on the Wars of the Maccabees. Antiochus was

  • Antiochus Megas (Seleucid king)

    Antiochus III the Great, Seleucid king of the Hellenistic Syrian Empire from 223 bce to 187, who rebuilt the empire in the East but failed in his attempt to challenge Roman ascendancy in Europe and Asia Minor. He reformed the empire administratively by reducing the provinces in size, established a

  • Antiochus of Ascalon (Greek philosopher)

    Antiochus Of Ascalon, Greek philosopher who followed Philo of Larissa as the head of the Academy, charting a new course for Platonism. He built up his philosophical system on a foundation of three schools: Platonism, Peripateticism, and Stoicism. Stoic ideas played the most important role in his

  • Antiochus the Great (Seleucid king)

    Antiochus III the Great, Seleucid king of the Hellenistic Syrian Empire from 223 bce to 187, who rebuilt the empire in the East but failed in his attempt to challenge Roman ascendancy in Europe and Asia Minor. He reformed the empire administratively by reducing the provinces in size, established a

  • Antiochus VII Sidetes (Seleucid king)

    Antiochus VII Sidetes, who, after reuniting his country, ruled as king of the Seleucid state of Syria in 139/138–129 bc and successfully recovered much of his forefathers’ territory before he was slain by the Parthians. The son of Demetrius I and brother of Demetrius II, both Seleucid kings,

  • Antiope (Greek mythology)

    Antiope, in Greek legend, the mother, by the god Zeus, of the twins Amphion and Zethus. According to one account, her beauty attracted Zeus, who, assuming the form of a satyr, took her by force. Pregnant, she escaped the threats of her father by running away and marrying Epopeus, king of Sicyon;

  • Antioqueños (people)

    Colombia: Daily life and social structure: …in which they live, and Antioqueños, Santandereanos, Tolimenses, Nariñenses, Bogotanos, and Boyacanses are recognized by their dress, diet, and speech. The most socially and economically prominent group is the Antioqueños, who migrated from Antioquia southward along the Cordilleras Central and Occidental during the 19th century. Numbering some five million, the…

  • Antioquia batholith (batholith, Colombia)

    Colombia: Relief: …to the deeply weathered, granitic Antioquia batholith (an exposed granitic intrusion), a tableland averaging some 8,000 feet (2,500 metres) above sea level. It is divided into two parts by the deep transverse cleft of the Porce River, which occupies the U-shaped valley in which is situated the expanding metropolis of…

  • antioxidant (chemical compound)

    Antioxidant, any of various chemical compounds added to certain foods, natural and synthetic rubbers, gasolines, and other substances to retard autoxidation, the process by which these substances combine with oxygen in the air at room temperature. Retarding autoxidation delays the appearance of

  • antiparkinson drug

    Antiparkinson drug, any drug used to treat the symptoms of Parkinson disease or other conditions of parkinsonism. The major antiparkinson drugs are levodopa, dopamine-receptor agonists, amantadine, and the so-called COMT (catechol-O-methyltransferase) inhibitors, MAO-B (monoamine oxidase B)

  • Antiparos (island, Greece)

    Páros: …is the once-attached island of Andíparos (Antiparos), the ancient Oliarus, whose limestone cavern is a tourist attraction. Pop. (2001) town, 4,463; municipality, 12,514; (2011) town, 4,326; municipality 13,715.

  • antiparticle (physics)

    Antiparticle, subatomic particle having the same mass as one of the particles of ordinary matter but opposite electric charge and magnetic moment. Thus, the positron (positively charged electron) is the antiparticle of the negatively charged electron. The spinning antineutron, like the ordinary

  • Antipas (ruler of Galilee)

    Herod Antipas, son of Herod I the Great who became tetrarch of Galilee and ruled throughout Jesus of Nazareth’s ministry. In The Gospel According to Luke (13:32), Jesus is reported as having referred to him with contempt as “that fox.” About 4 bc Herod Antipas inherited part of his father’s kingdom

  • antipasto (food)

    Antipasto, in Italian cuisine, a first course or appetizer (q.v.). In the home, cured or smoked meats and sausages, olives, salted anchovies, sardines, fresh or pickled vegetables, shellfish, peppers, and cheeses are favoured, while restaurant presentations add to these elaborate prepared dishes

  • Antipater (regent of Macedonia)

    Antipater, Macedonian general, regent of Macedonia (334–23) and of the Macedonian Empire (321–319) whose death signaled the end of centralized authority in the empire. One of the leading men in Macedonia at the death of Philip II in 336, he helped to secure the succession to the Macedonian throne

  • Antipater (Stoic philosopher)

    epistemology: Ancient Skepticism: …objection, raised by the Stoic Antipater (flourished c. 135 bce) and others, that the view is self-contradictory. To know that knowledge is impossible is to know something. Hence, dogmatic Skepticism must be false.

  • Antipater (son of Herod the Great)

    Antipater, son of Herod the Great, who conspired against his half brothers Aristobulus and Alexander for the succession to the throne of Judaea and secured their execution (7 or 6 bc). The following year he was tried for plotting against Herod and Pheroras, Herod’s brother, and was executed five

  • Antipater (Idumaean governor of Judaea)

    Antipater, Idumaean founder of the Herodian dynasty in Palestine. Antipater gained power in Judaea by making himself useful to the Romans. In return for Antipater’s support, Caesar appointed him procurator of Judaea in 47 bc. Although Antipater was assassinated by a political rival four years

  • Antipatharia (anthozoan order)

    coral: …corals and thorny corals (Antipatharia), about 100 species; horny corals, or gorgonians (Gorgonacea), about 1,200 species; and blue corals (Coenothecalia), one living species.

  • Antipatris (ancient city, Israel)

    Petaḥ Tiqwa: …Judaea, built the city of Antipatris on the site (c. 20 bc). Pop. (2006 est.) 182,800.

  • Antipersonalist Union Party (political party, Argentina)

    Marcelo T. de Alvear: …broke with Irigoyen, founded the Antipersonalist Union Party, a splinter group of the UCR, and formed an alliance with many conservatives (members of the old oligarchy that opposed the UCR). Despite Alvear’s opposition, Irigoyen regained the presidency in elections in 1928. Alvear rejoined the UCR after a conservative-oriented military coup…

  • antipersonnel land mine (land mine)

    International Campaign to Ban Landmines: …production, trade, and stockpiling of antipersonnel land mines. In 1997 the coalition was awarded the Nobel Prize for Peace, which it shared with its founding coordinator, American Jody Williams.

  • antipersonnel mine (land mine)

    International Campaign to Ban Landmines: …production, trade, and stockpiling of antipersonnel land mines. In 1997 the coalition was awarded the Nobel Prize for Peace, which it shared with its founding coordinator, American Jody Williams.

  • antiperthite (mineral)

    feldspar: Chemical composition: …over the plagioclase constituent, whereas antiperthite is the name given to intimate mixtures in which the plagioclase constituent is predominant. Perthites are common, whereas antiperthites are relatively rare.

  • Antiphanes (Greek writer)

    Antiphanes, prolific and influential Greek writer of Middle Comedy, which succeeded Old Comedy (known from the 5th-century plays of Aristophanes). Antiphanes, son of Demophanes (or of Stephanus), began producing comedies at Athens in the second half of the 380s bc. In the festival contests

  • Antipholus of Ephesus (fictional character)

    The Comedy of Errors: …not knowing that his brother Antipholus of Ephesus (with his own servant, also named Dromio) is already there. A series of misidentifications ensue. Antipholus of Syracuse is entertained by his brother’s wife and woos her sister; he receives a gold chain meant for his brother and is chased by a…

  • Antipholus of Syracuse (fictional character)

    The Comedy of Errors: Antipholus of Syracuse, the son raised by Egeon, has for five years been seeking his mother and brother, while Egeon in turn has been seeking his missing son. Egeon’s story wins from Solinus a day’s respite to raise the ransom money.

  • Antiphon (Greek writer and statesman)

    Antiphon, orator and statesman, the earliest Athenian known to have taken up rhetoric as a profession. He was a logographos; i.e., a writer of speeches for other men to deliver in their defense in court, a function that was particularly useful in the climate of accusation and counter-accusation

  • antiphon (music)

    Antiphon, in Roman Catholic liturgical music, chant melody and text sung before and after a psalm verse, originally by alternating choirs (antiphonal singing). The antiphonal singing of psalms was adopted from Hebrew worship by the early Christian churches, notably that of Syria, and was introduced

  • antiphonal singing (music)

    Antiphonal singing, alternate singing by two choirs or singers. Antiphonal singing is of great antiquity and occurs in the folk and liturgical music of many cultures. Descriptions of it occur in the Old Testament. The antiphonal singing of psalms occurred both in ancient Hebrew and early Christian

  • antiphony (music)

    Antiphonal singing, alternate singing by two choirs or singers. Antiphonal singing is of great antiquity and occurs in the folk and liturgical music of many cultures. Descriptions of it occur in the Old Testament. The antiphonal singing of psalms occurred both in ancient Hebrew and early Christian

  • antiplatelet drug

    Antiplatelet drug, any drug that interferes with the aggregation of platelets and formation of a clot (thrombus) in a blood vessel. Clot formation in coronary arteries may cut off the blood supply to a region of the heart and cause a myocardial infarction (heart attack). When administered during a

  • antipodal cell (biology)

    plant development: Preparatory events: …at the opposite pole, the antipodals, play a part in embryo nutrition in certain genera. The two polar nuclei in the central cell ultimately unite, becoming the fusion nucleus. The pollen grain is transferred by various agencies (wind, water, animals) to the stigma of the female flower, and, as in…

  • Antipodes Islands (islands, New Zealand)

    Antipodes Islands, outlying island group of New Zealand in the South Pacific Ocean, 350 miles (560 km) southeast of South Island, comprising a central island (5 by 3 miles [8 by 5 km]) and several islets. The total land area is 24 square miles (62 sq km). Coastal cliffs flank an interior that

  • Antipodes, The (play by Brome)

    English literature: The last Renaissance dramatists: …and popular comedies, such as The Antipodes (1640) and A Jovial Crew (produced 1641, printed 1652), poke fun at all levels of society and include caustic and occasionally libelous humour. The outbreak of fighting in 1642 forced the playhouses to close, but this was not because the theatre had become…

  • Antipodes, The (play by Baker)

    Annie Baker: Baker followed with The Antipodes in 2017, which observed a brainstorming session between a group of screenwriters.

  • antipoetry (literature)

    Nicanor Parra: …time, the originator of so-called antipoetry (poetry that opposes traditional poetic techniques or styles).

  • Antipolo (Philippines)

    Antipolo, city, central Luzon, Philippines. Lying 12 miles (19 km) east of Manila in the Sierra Madre foothills, it was founded in 1578. Antipolo is the home of the icon of Nuestra Señora de la Paz y Buen Viaje (“Our Lady of Peace and Safe Voyage”). The icon, after repeated safe journeys between

  • antipope (Roman Catholic history)

    Antipope, in the Roman Catholic church, one who opposes the legitimately elected bishop of Rome, endeavours to secure the papal throne, and to some degree succeeds materially in the attempt. This abstract definition is necessarily broad and does not reckon with the complexity of individual cases.

  • antiprogestin (drug)

    Antiprogestin, any substance that blocks the synthesis or action of the hormone progesterone. Antiprogestins are used for contraception, labour induction, and treatment of endometriosis and breast cancer. Mifepristone was the first antiprogestin to be described and was marketed under various trade

  • Antiprognosticon (work by Bainbridge)

    John Bainbridge: …signs of impending disaster, in Antiprognosticon (1642) he recanted and vigorously denounced astrological superstition that based predictions on conjunctions of the planets and appearances of comets. His other publication includes the translation of ancient Greek astronomical works: Procli Sphaera et Ptolomaei de Hypothesibus Planetarum (1620; “The Sphere of Proclus and…

  • antiproton (physics)

    Antiproton, subatomic particle of the same mass as a proton but having a negative electric charge and oppositely directed magnetic moment. It is the proton’s antiparticle. Antiprotons were first produced and identified in 1955 by Emilio Segrè, Owen Chamberlain (for which they received the Nobel

  • antiprotozoal drug

    Antiprotozoal drug, any agent that kills or inhibits the growth of organisms known as protozoans. Protozoans cause a variety of diseases, including malaria and Chagas’ disease. While protozoans typically are microscopic, they are similar to plants and animals in that they are eukaryotes and thus

  • antipsychiatry movement

    deinstitutionalization: Psychiatric deinstitutionalization: …also influenced by the so-called antipsychiatry movement. From 1950 to 1970 the movement emphasized the role that social factors played in psychological disorders. It focused on social pathologies and on the deindividualization of mental illness (abandonment of individual values in an effort to identify with one’s society). At the same…

  • antipsychotic drug

    Antipsychotic drug, any agent used in the treatment of psychosis, a form of mental illness. Psychoses can affect cognitive processes such as judgment and frequently cause delusions and hallucinations. The most widely known psychosis is schizophrenia. Effective treatments for some forms of

  • antipyretic (drug)

    analgesic: Anti-inflammatory analgesics: Aspirin and NSAIDs appear to share a similar molecular mechanism of action—namely, inhibition of the synthesis of prostaglandins (natural products of inflamed white blood cells) that induce the responses in local tissue that include pain and inflammation. In fact, aspirin and all aspirin-like analgesics, including indomethacin and…

  • Antipyrgos (Libya)

    Tobruk, port, northeastern Libya. It was the site of Antipyrgos, an ancient Greek agricultural colony, and thereafter of a Roman fortress guarding the Cyrenaican frontier. The town later became a way station on the coastal caravan route. Because it is Libya’s only natural harbour, Tobruk was

  • antipyrine (drug)

    Ludwig Knorr: ), German chemist who discovered antipyrine.

  • antiqua script (calligraphy)

    Roman script, in calligraphy, script based upon the clear, orderly Carolingian writing that Italian humanists mistook for the ancient Roman script used at the time of Cicero (1st century bc). They used the term roman to distinguish this supposedly classical style from black-letter and national

  • antiquarianism (art)

    art market: The rise of the antique: This spirit of antiquarianism affected silverwork in London during the Regency period: Rundell, Bridge and Rundell, England’s leading silver manufacturer, built up a huge stock of old silver to use as a design source for their products. The interest in antiques also led to the emergence of dealers…

  • antiquark (physics)

    subatomic particle: Quarks and antiquarks: The baryons and mesons are complex subatomic particles built from more-elementary objects, the quarks. Six types of quark, together with their corresponding antiquarks, are necessary to account for all the known hadrons. The six varieties, or “flavours,” of quark have acquired the names up,…

  • antique (valuable relic or old object)

    Antique, a relic or old object having aesthetic, historic, and financial value. Formerly, it referred only to the remains of the classical cultures of Greece and Rome; gradually, decorative arts—courtly, bourgeois, and peasant—of all past eras and places came to be considered antique. Antiques

  • antique finish (paper)

    papermaking: Book paper: …comes in four finishes: (1) antique or eggshell, (2) machine finish, MF, (3) English finish, EF, and (4) supercalendered. Antique has the roughest surface. High bulking pulps, such as soda pulp, are used and only slightly beaten in stock preparation. The sheet is lightly calendered (pressed between rollers) to provide…

  • Antique Smith (Scottish forger)

    forgery: Instances of literary forgery: (“Antique”) Smith, who was responsible for forgeries of Robert Burns, Sir Walter Scott, Mary Stuart, and other persons from Scottish literature and history—a feat that ultimately earned him 12 months’ imprisonment.

  • Antiquing for the Ages: The Search for Hidden Treasures

    The promise of huge payoffs sent droves of treasure seekers to attics, basements, yard sales, and trash piles in 2001. Fueling the antique mania was the popularity and high visibility of television shows, including Antiques Road Show, Treasures in Your Attic, and Appraisal Fair, featuring experts

  • Antiquitates Judaicae (work by Josephus)

    The Antiquities of the Jews, an account of Jewish history from its early beginnings to the revolt against Rome in ad 66, written in Greek in about ad 93 by Flavius Josephus, a general in the Jewish army who defected to Rome. His writings are not always accepted as totally

  • Antiquitates rerum humanarum et divinarum (work by Varro)

    Marcus Terentius Varro: …the second part of his Antiquitates rerum humanarum et divinarum (“Antiquities of Human and Divine Things”). Under the second triumvirate Varro was outlawed by Mark Antony, and his books were burned, but his property was later restored by Augustus. He spent the rest of his life in study and writing.

  • Antiquités de Rome (work by Bellay)

    Joachim du Bellay: …of ancient Rome in the Antiquités de Rome and to melancholy satire in his finest work, the Regrets (both published after his return to France in 1558).

  • Antiquités Nationales, Musée des (museum, Saint-Germain-en-Laye, France)

    museum: Museums of antiquities: In France the Museum of National Antiquities opened at Saint-Germain-en-Laye late in the 18th century. It still acts as a national archaeological repository, as does the State Historical Museum in Stockholm, which houses material recovered as early as the 17th century. The national archaeological museum in Greece was…

  • antiquities (art)

    art market: …such as textiles, curiosities, and antiquities.

  • antiquities museum

    museum: Museums of antiquities: …of the Black Sea, four archaeological museums were opened, at Feodosiya, Kerch, Nikolayev, and Odessa (all now located in Ukraine). The Museum of Northern Antiquities was opened in Copenhagen in 1819 (it was there that its first director, Christian Jürgensen Thomsen, developed the three-part system of classifying prehistory into the…

  • Antiquities of Mexico (work by King)

    Dresden Codex: …Edward King, Viscount Kingsborough, in Antiquities of Mexico (1830–48). King erroneously attributed the codex to the Aztecs. The first scientific edition of the codex was made by E. Förstemann (Leipzig, 1880). See also Madrid Codex; Paris Codex.

  • Antiquities of South Arabia, The (encyclopaedia by al-Hamdānī)

    al-Hamdānī: His encyclopaedia Al-Iklīl (“The Crown”; Eng. trans. of vol. 8 by N.A. Faris as The Antiquities of South Arabia) and his other writings are a major source of information on Arabia, providing a valuable anthology of South Arabian poetry as well as much genealogical, topographical, and historical…

  • Antiquities of the Jews, The (work by Josephus)

    The Antiquities of the Jews, an account of Jewish history from its early beginnings to the revolt against Rome in ad 66, written in Greek in about ad 93 by Flavius Josephus, a general in the Jewish army who defected to Rome. His writings are not always accepted as totally

  • Antiquities of Warwickshire (work by Dugdale)

    Sir William Dugdale: …other important works are the Antiquities of Warwickshire (1656), which became a model for large-scale county histories, and The Baronage of England (1675–76). He was knighted in 1667.

  • antirabies serum (medicine)

    rabies: …then receive a dose of antirabies serum. Serum is derived from horses or humans that have been immunized with attenuated rabies virus; it provides the patient with already prepared antibodies against the rabies antigen. The treatment is effective if given within 24 hours after exposure but has little, if any,…

  • antirealism (philosophy)

    philosophy of religion: Realism and antirealism: A renewed concern of philosophers of religion in the late 20th and early 21st centuries was to determine the sense in which religious claims may be said to be true. The responses to this question took two broad forms. According to the view known…

  • antired (subatomic property)

    quark: Quark colours: …to quarks, and their opposites, antired, antigreen, and antiblue, are ascribed to antiquarks. According to QCD, all combinations of quarks must contain mixtures of these imaginary colours that cancel out one another, with the resulting particle having no net colour. A baryon, for example, always consists of a combination of…

  • antireflection layer (solar cell engineering)

    solar cell: Solar cell structure and operation: …through an optical coating, or antireflection layer, that minimizes the loss of light by reflection; it effectively traps the light falling on the solar cell by promoting its transmission to the energy-conversion layers below. The antireflection layer is typically an oxide of silicon, tantalum, or titanium that is formed on…

  • Antirent War (United States history)

    Antirent War , (1839–46), in U.S. history, civil unrest and rioting in upper New York state arising from the dissatisfaction of leaseholding farmers over the patroon system then prevailing on the great hereditary estates, originally established by the Dutch. In addition to rent, a farmer had to

  • antiretroviral drug (pharmacology)

    AIDS: Antiretroviral medications: HIV infection is treated with three classes of antiretroviral medications. Protease inhibitors, which inhibit the action of an HIV enzyme called protease, include ritonavir, saquinavir, indinavir, nelfinavir, and lopinavir. Nucleoside reverse transcriptase (RT) inhibitors (e.g., abacavir [ABC], zidovudine [

  • antiroll fin (shipbuilding)

    ship: Ship motions in response to the sea: The most effective are antiroll fins that extend transversely from the side of the ship for perhaps 30 feet (10 metres) and are continuously rotated about their axes to develop forces that oppose the roll. Among the sizable costs associated with these fins is the necessity to retract them…

  • Antirrhinum (plant, genus Antirrhinum)

    Snapdragon, any herbaceous plant of the genus Antirrhinum (order Lamiales, family Plantaginacea; formerly in the family Scrophulariaceae), of which there are about 20 species native to western North America and the western Mediterranean region. The flowers are tubular, bilaterally symmetrical, and

  • Antisana (mountain, Ecuador)

    Ecuador: Relief: …Cayambe (18,996 feet [5,790 metres]), Antisana (18,714 feet [5,704 metres]), Cotopaxi, which is one of the world’s highest active volcanoes (19,347 feet [5,897 metres]), Chimborazo (20,702 feet [6,310 metres]), Altar (17,451 feet [5,319 metres]), and Sangay (17,158 feet [5,230 metres]). These are included in two ranges connected at

  • antiselection (economics)

    Adverse selection, term used in economics and insurance to describe a market process in which buyers or sellers of a product or service are able to use their private knowledge of the risk factors involved in the transaction to maximize their outcomes, at the expense of the other parties to the

  • antisense ribonucleic acid (biochemical)

    nucleic acid: Antisense RNAs: Most antisense RNAs are synthetically modified derivatives of RNA or DNA with potential therapeutic value. In nature, antisense RNAs contain sequences that are the complement of the normal coding sequences found in mRNAs (also called sense RNAs). Like mRNAs, antisense RNAs are single-stranded,…

  • antisense RNA (biochemical)

    nucleic acid: Antisense RNAs: Most antisense RNAs are synthetically modified derivatives of RNA or DNA with potential therapeutic value. In nature, antisense RNAs contain sequences that are the complement of the normal coding sequences found in mRNAs (also called sense RNAs). Like mRNAs, antisense RNAs are single-stranded,…

  • antiseptic (medicine)

    Antiseptic, any of several substances used to inhibit the growth of or destroy infectious microorganisms. See antimicrobial

  • antiserum

    Antiserum, blood serum that contains specific antibodies against an infective organism or poisonous substance. Antiserums are produced in animals (e.g., horse, sheep, ox, rabbit) and man in response to infection, intoxication, or vaccination and may be used in another individual to confer immunity

  • Check out Britannica's new site for parents!
    Subscribe Today!