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  • Etymologicon Linguae Anglicanae (dictionary by Skinner)
    ...Each area of lexical study, such as etymology, pronunciation, and usage, can have a dictionary of its own. The earliest important dictionary of etymology for English was Stephen Skinner’s Etymologicon Linguae Anglicanae of 1671, in Latin, with a strong bias for finding a Classical origin for every English word. In the 18th century, a number of dictionaries were published tha...
  • “Etymologies” (work by Isidore of Sevilla)
    ...to the fact that in this period popular works of medicine, agriculture, astrology, and geography were translated from Latin into Arabic. Many of these texts must have been derived from the Etymologies of Isidore of Sevilla and from other Christian writers. In the 9th century the situation changed abruptly: the Andalusians, who traveled east in order to comply with the injunction......
  • etymology
    the history of a word or word element, including its origins and derivation. Although the etymologizing of proper names appears in the Old Testament and Plato dealt with etymology in his dialogue Cratylus, lack of knowledge of other languages and of the historical developments that languages undergo prevented ancient writers from arrivi...
  • ʿEtz ḥayyim (work by Aaron ben Elijah)
    Aaron ben Elijah’s views are summarized in his compilation of Karaite lore, in three books. In the first book, ʿEtz ḥayyim (1346; “Tree of Life”), modeled after the 12th-century Jewish philosopher Maimonides’ Moreh nevukhim (The Guide for the Perplexed), he attempts to create a Karaite counterpart to Maimonides’ Aristotelian out...
  • ʿEtz ḥayyim (work by Vital)
    ...school. He became the leader of Palestinian Jewish Kabbalism and served as rabbi and head of a yeshiva (school of advanced Jewish learning) in Jerusalem (1577–85). His major work was the ʿEtz ḥayyim (“Tree of Life”), a detailed exposition of Lurian Kabbala, which also appeared in altered editions by rivals that he repudiated. His son Samuel published......
  • Etzel (legendary character)
    ...445). He was one of the greatest of the barbarian rulers who assailed the Roman Empire, invading the southern Balkan provinces and Greece and then Gaul and Italy. In legend he appears under the name Etzel in the Nibelungenlied and under the name Atli in Icelandic sagas....
  • ETZEL (Jewish right-wing underground movement)
    Jewish right-wing underground movement in Palestine, founded in 1931. At first supported by many non-Socialist Zionist parties, in opposition to the Haganah, it became in 1936 an instrument of the Revisionist Party, an extreme nationalist group that had seceded from the World Zionist Organization and whose policies called for the use of force, if necessary, to establish a Jewish...
  • Etzel Andergast (work by Wassermann)
    ...War I German youth by rejecting the authority of the past and finding his own truth by trial-and-error, doggedly following elusive clues. This work was extended into a trilogy including Etzel Andergast (1931) and Joseph Kerkhovens dritte Existenz (1934; Kerkhoven’s Third Existence). Mein Weg als Deutscher und Jude (1921; My Life as German and Jew) is......
  • EU (European organization)
    international organization comprising 27 European countries and governing common economic, social, and security policies. Originally confined to western Europe, the EU has expanded to include several central and eastern European countries. The EU’s members are Austria, Belgium, Bulgaria, Cyprus, the Czech Republic, De...
  • Eu (chemical element)
    (Eu), chemical element, rare-earth metal of the lanthanoid series of the periodic table; it is the least dense, softest, and most volatile member of the lanthanoid series. The element was discovered (1896) by Eugène-Anatole Demarçay and named for Europe. One of the least abundant rare earths, it occurs in minute amounts in many r...
  • ʿEua (island, Tonga)
    volcanic and limestone island in the Tongatapu Group of Tonga, southwestern Pacific Ocean. The second largest of the group, ʿEua is hilly and rises to an elevation of 1,078 feet (329 metres). Sighted in 1643 by the Dutch navigator Abel Janszoon Tasman, the island was originally named Middleburg. ʿEua has a nu...
  • Euanthe (genus of orchid)
    Vanda flowers usually are flat and have a short spur on the lip. One of the most beautiful species, V. sanderiana, is considered to be in a separate genus, Euanthe, by some authorities. This many-coloured Philippine flower is often used in hybridization. The bluish-flowered V. coerulea and the dark-spotted V. tricolor are other well-known species....
  • EUB (American church)
    Protestant church formed in 1946 by the merger of the Evangelical Church and the Church of the United Brethren in Christ. Both of these churches were essentially Methodist in doctrine and church government, and both originated among German-speaking people in Pennsylvania, Maryland, and Virginia after the ...
  • eubacteria (bacteria)
    term formerly used to describe and differentiate any of a group of prokaryotic true bacteria from the archaebacteria. Today, true bacteria form the domain Bacteria. Bacteria are genetically and morphologically distinct from organisms classified in the other two domains of life, Archaea (formerly the Archaebacteria) and Eukarya (the eukaryotes...
  • Eubacteriales (bacteria)
    term formerly used to describe and differentiate any of a group of prokaryotic true bacteria from the archaebacteria. Today, true bacteria form the domain Bacteria. Bacteria are genetically and morphologically distinct from organisms classified in the other two domains of life, Archaea (formerly the Archaebacteria) and Eukarya (the eukaryotes...
  • eubacterium (bacteria)
    term formerly used to describe and differentiate any of a group of prokaryotic true bacteria from the archaebacteria. Today, true bacteria form the domain Bacteria. Bacteria are genetically and morphologically distinct from organisms classified in the other two domains of life, Archaea (formerly the Archaebacteria) and Eukarya (the eukaryotes...
  • Eubalaena (whale genus)
    The name right whale refers to the bowhead, or Greenland right whale (Balaena mysticetus), and to the whales of the genus Eubalaena (though originally only to E. glacialis). The bowhead has a black body, a white chin and throat, and, sometimes, a white belly.......
  • Eubalaena australis (mammal)
    ...glacialis of the North Atlantic and E. japonica of the North Pacific, both commonly called northern right whales, and E. australis of the Southern Hemisphere, referred to as the southern right whale. Whether found in northern or southern latitudes, these right whales are estimated to reach a maximum length of about 18 metres. They may or may not have white on the undersides...
  • Eubalaena glacialis (Atlantic mammal)
    The whales of the genus Eubalaena, on the other hand, live in temperate waters. Because their ranges do not overlap, these right whales are classified into three different species: E. glacialis of the North Atlantic and E. japonica of the North Pacific, both commonly called northern right whales, and E. australis of the Southern Hemisphere, referred to as the......
  • Eubalaena japonica (Pacific Ocean mammal)
    ...on the other hand, live in temperate waters. Because their ranges do not overlap, these right whales are classified into three different species: E. glacialis of the North Atlantic and E. japonica of the North Pacific, both commonly called northern right whales, and E. australis of the Southern Hemisphere, referred to as the southern right whale. Whether found in......
  • Eubie! (American musical)
    In 1978 Hines starred with his brother in Eubie!, a tribute to American ragtime pianist and composer Eubie Blake that was choreographed by Le Tang. The production was a great success and sparked new interest in tap dancing. Hines received a Tony Award nomination, and other nominations followed for performances in......
  • Eublepharinae (reptile subfamily)
    ...ventrally by small granular scales often containing tubercles. Limbs present but greatly reduced in pygopodids. Approximately 100 genera, about 1,200 species.Subfamily Eublepharinae (banded and leopard geckos)Geckos with movable eyelids and no adhesive toe pads. In general, they use an active foraging mode. Th...
  • Euboea (island, Greece)
    island, the largest in Greece, after Crete. In the Aegean Sea, it forms with the island of Skyros to the northwest, the nomós (department) of Euboea, whose capital is Chalcis. Recognized geographically as part of the Greek mainland, which it almost touches at ...
  • Euboea, Gulf of (gulf, Greece)
    arm of the Aegean Sea, between the island of Euboea (northeast) and the Greek mainland (southwest). Trending northwest-southeast, the gulf is divided by the narrow Strait of Euripus, at the town of Chalcis (Khalkís). The northern part is about 50 miles (80 km) long and up to 15 miles (24 km) wide, and the southern part is about 30 miles (...
  • Euboicus (work by Dion Chrysostom)
    ...German dramatist Gotthold Lessing’s Laocoon. In On Aeschylus, Sophocles and Euripides, Dion compares the treatment of the story of Philoctetes by each tragedian. Best known is the Euboicus, depicting country life on the island of Euboea, an important document for social and economic history. A patriotic Greek who...
  • Eubranchipus vernalis (crustacean)
    ...North America, the drier regions of Africa, and Australia. The most common species in Europe is Chirocephalus diaphanus; in North America the most common is Eubranchipus vernalis. ...
  • Eubulides of Miletus (Greek philosopher)
    a member of the Megarian school of philosophy in Athens and renowned as an inventor of logical paradoxes, the most famous of which is “The Liar” (“Does a man who says that he is now lying, speak truly?”). He was a contemporary of Aristotle, whom he attacked, and...
  • Eubulus (Greek statesman)
    Athenian statesman noted for his able financial administration....
  • Eucalyptus (plant genus)
    large genus of mostly very large trees, of the myrtle family (Myrtaceae), native to Australia, New Zealand, Tasmania, and nearby islands. More than 500 species have been described. In Australia the eucalypti are commonly known as gum trees or stringybark trees. Many species are cultivated...
  • Eucalyptus macrocarpa (plant)
    ...receptacle and contains numerous minute seeds. Possibly the largest fruits—from 5 to 6 centimetres (2 to 2.5 inches) in diameter—are borne by E. macrocarpa, also known as the mottlecah, or silverleaf, eucalyptus....
  • eucalyptus oil
    The leaf glands of many species, especially E. salicifolia and E. globulus, contain a volatile, aromatic oil known as eucalyptus oil. Its chief use is medical, and it constitutes an active ingredient in expectorants and inhalants. E. globulus, E. siderophloia, and other species yield what is known as Botany Bay kino, an astringent dark-reddish resin, obtained in a semifluid......
  • Eucalyptus regnans (tree)
    ...(Wolffia; Araceae) at less than 2 millimetres (0.08 inch), to one of the tallest angiosperms, Australia’s mountain ash tree (Eucalyptus regnans; Myrtaceae) at about 100 metres (330 feet). Between these two extremes lie angiosperms of almost every size and shape. Examples of this variability include the succulent cacti.....
  • Eucarida (crustacean)
    ...at base; few parasites; most 5–50 mm but up to 140 mm; worldwide; mainly marine but also numerous in fresh water; about 6,000 species.Superorder Eucarida.Carapace large, fused dorsally to all thoracic segments; eyes stalked; development usually involves larval forms but is sometimes......
  • eucaryote (biology)
    any cell or organism that possesses a clearly defined nucleus. The eukaryotic cell has a nuclear membrane that surrounds the nucleus, in which the well-defined chromosomes (bodies containing the hereditary material) are located. Eukaryotic cells also contain organelles, including mitochondria (cellular energy exchangers), a ...
  • Eucera (bee genus)
    ...Four genera of solitary bees and wasps appear to be the principal pollinators. The orchid species of Ophrys that are pollinated by the wasps Trielis and Gorytes, and the bee Eucera induce the insects to attempt copulation with the apex of the lip. Those orchids pollinated by Andrena appear, for the most part, to stimulate the bee to reverse its position and......
  • Eucestoda (tapeworm subclass)
    ...confined to anterior region; genital pores near anterior end; parasitic in intestine of fish of the genus Chimaera; 105 species.Subclass EucestodaPolyzoic tapeworms with scolex (head) of varying structure; body usually with distinct external segmentation; parasitic in intestine of vertebra...
  • Eucharist (Christianity)
    in Christianity, ritual commemoration of Jesus’ Last Supper with his disciples, at which (according to tradition) he gave them bread with the words, “This is my body,” and wine with the words, “This is my blood.” The story of the institution of the Eucharist by Jesus on the night before his Crucifixion is r...
  • Eucharist, liturgy of the (Roman Catholicism)
    ...nourishment in its attempt to bring the gospel message to all men. The mass consists of two parts: the liturgy of the Word, which includes readings from Scripture and the homily (sermon), and the liturgy of the Eucharist, which includes the offertory, the eucharistic prayer (canon), and the communion. The rite was changed greatly after the second Vatican Council (1962–65), most......
  • Eucharistic Prayer IV (Christianity)
    ...grow. This assumption was the motivation of the liturgical revisions and renewals attempted in many Western churches in the second half of the 20th century. An outstanding example is provided by Eucharistic Prayer IV in the Roman Missal of 1969–70, which has been borrowed and adapted by several other churches. Here the words and the ritual actions allow a reappropriation of the entire......
  • Euchlaena mexicana (plant)
    any of four species of tall, stout, solitary annual or spreading perennial grasses of the family Poaceae, native to Mexico, Guatemala, Honduras, and Nicaragua. Corn, or maize (Z. mays mays), is a worldwide cultigen that was derived from the “Balsas” teosinte (Z. mays parviglumis) of southern Mexico in pre-Columbian times more than 5...
  • Euchologion (work by Saint Sarapion)
    ...about the divine Trinity, particularly on the Holy Spirit. Important as evidence of primitive Christian public prayer is Sarapion’s Euchologion (“Collected Prayers,” or “Sacramentary”), which contains liturgical texts for various rites and blessings, including some of the earliest formulas in the......
  • euchre (card game)
    card game popular in the United States, Canada, New Zealand, and Great Britain, especially in Cornwall and the West Country of England. It derives from a 19th-century Alsatian game called juckerspiel from the fact that its two top trump...
  • Eucinostomus argenteus (fish)
    ...mouths, with the opened jaws forming an extended tube. Although their maximum length is about 35 cm (14 inches), most species of mojarra do not attain lengths greater than 25 cm (10 inches). The spotfin mojarra (Eucinostomus argenteus), which is one of the most widespread species, occurs along the Atlantic, ......
  • Eucken, Rudolf Christoph (German philosopher)
    German Idealist philosopher, winner of the Nobel Prize for Literature (1908), interpreter of Aristotle, and author of works in ethics and religion....
  • Eucla Basin (region, Australia)
    artesian depression in Western Australia and South Australia, Australia. Sloping southward to the Great Australian Bight and underlying the enormous limestone waste of the Nullarbor Plain, its area is about 69,500 sq...
  • Eucleidae (insect)
    any of approximately 1,000 species of insects (order Lepidoptera) that are widely distributed throughout the world but are concentrated in the tropics. These moths are named after their short, fleshy, sluglike caterpillars. In the caterpillars, suckers have replaced the typical larval prolegs, and the larvae seem to glide rather than crawl. Some larvae are brightly coloured and have ...
  • Eucleides of Megara (Greek philosopher)
    ...that there was no place for a man of conscience in Athenian politics. In 399 bc the democracy condemned Socrates to death, and Plato and other Socratic men took temporary refuge at Megara with Eucleides, founder of the Megarian school of philosophy. The next few years are said to have been spent in extensive travels in Greece, in Egypt, and in Italy. Plato himself (if the Se...
  • Euclid (Ohio, United States)
    city, Cuyahoga county, northeastern Ohio, U.S., on Lake Erie, just northeast of Cleveland. The original township area was settled in 1797 and was named for the famous Greek mathematician by the surveyors who arrived with Moses Cleaveland, an agent of the Connecticut Land Company. It remained largely rural, noted chiefly for ...
  • Euclid (Greek mathematician)
    the most prominent mathematician of Greco-Roman antiquity, best known for his treatise on geometry, the Elements....
  • Euclid Cleared of Every Flaw (work by Saccheri)
    In 1733 the Italian Girolamo Saccheri published his Euclides ab Omni Naevo Vindicatus (“Euclid Cleared of Every Flaw”). This was an important work of synthesis in which he provided a complete analysis of the problem of parallels in terms of Omar Khayyam’s quadrilateral (see the figure). Using the Euclidean assumption that straight lines do not enclose an ar...
  • Euclid of Megara (Greek philosopher)
    ...that there was no place for a man of conscience in Athenian politics. In 399 bc the democracy condemned Socrates to death, and Plato and other Socratic men took temporary refuge at Megara with Eucleides, founder of the Megarian school of philosophy. The next few years are said to have been spent in extensive travels in Greece, in Egypt, and in Italy. Plato himself (if the Se...
  • Euclidean algorithm (mathematics)
    procedure for finding the greatest common divisor (GCD) of two numbers, described by the Greek mathematician Euclid in his Elements (c. 300 bc). The method is computationally efficient and, with minor modifications, is still used by computers....
  • Euclidean geometry
    the study of plane and solid figures on the basis of axioms and theorems employed by the Greek mathematician Euclid (c. 300 bc). In its rough outline, Euclidean geometry is the plane and solid geometry commonly taught in secondary schools. Indeed, until the second half of the 19th century, when ...
  • Euclidean space (geometry)
    In geometry, a two- or three-dimensional space in which the axioms and postulates of Euclidean geometry apply; also, a space in any finite number of dimensions, in which points are designated by coordinates (one for each dimension) and the distance between two points is given by a distance formula. The only conception of physical space for over 2,000 years, it...
  • Euclidean tools (geometry)
    ...and that a circle can be constructed with a given point as centre and a given line segment as radius. These postulates in effect restricted the constructions to the use of the so-called Euclidean tools—i.e., a compass and a straightedge or unmarked ruler....
  • “Euclides ab Omni Naevo Vindicatus” (work by Saccheri)
    In 1733 the Italian Girolamo Saccheri published his Euclides ab Omni Naevo Vindicatus (“Euclid Cleared of Every Flaw”). This was an important work of synthesis in which he provided a complete analysis of the problem of parallels in terms of Omar Khayyam’s quadrilateral (see the figure). Using the Euclidean assumption that straight lines do not enclose an ar...
  • Euclides of Megara (Greek philosopher)
    ...that there was no place for a man of conscience in Athenian politics. In 399 bc the democracy condemned Socrates to death, and Plato and other Socratic men took temporary refuge at Megara with Eucleides, founder of the Megarian school of philosophy. The next few years are said to have been spent in extensive travels in Greece, in Egypt, and in Italy. Plato himself (if the Se...
  • Euclid’s Windmill (geometry)
    The Pythagorean theorem states that the sum of the squares on the legs of a right triangle is equal to the square on the hypotenuse (the side opposite the right angle)—in familiar algebraic notation, a2 + b2 = c2. The Babylonians and Egyptians had found some integer triples (a, b, c) satis...
  • Eucommia ulmoides (plant species)
    family of dicotyledonous flowering plants comprising the single species Eucommia ulmoides. It is an elmlike tree of central and eastern China notable as a woody plant of temperate regions with milky latex from which rubber can be produced....
  • Eucommiaceae (plant family)
    family of dicotyledonous flowering plants comprising the single species Eucommia ulmoides. It is an elmlike tree of central and eastern China notable as a woody plant of temperate regions with milky latex from which rubber can be produced....
  • Eucratides (king of Bactria)
    the last important king of Greek Bactria...
  • eucrite (mineral)
    rock that contains 30 to 35 percent calcium-rich plagioclase feldspar (bytownite or anorthite), as well as augite, hypersthene, pigeonite, and olivine. The name was given (1863) by Gustav Rose to stony meteorites of this composition (see achondrite), but it has been extended to include similar intrusive igneous rocks...
  • Eucryphia (plant genus)
    genus of evergreen shrubs and trees, constituting the family Eucryphiaceae, with about five species native to Australia and Chile. They are planted in warm regions for their foliage and showy camellia-like cream-white flowers, which appear in late summer and fall....
  • Eucryphia × nymansensis (plant hybrid)
    E. cordifolia, which grows to a height of 12 m (40 feet), and E. glutinosa, up to 4.5 m (14.8 feet), have produced the hybrid E. ×nymansensis, hardier than E. cordifolia and tolerant of alkaline soils....
  • Eucryphia cordifolia (tree)
    E. cordifolia, which grows to a height of 12 m (40 feet), and E. glutinosa, up to 4.5 m (14.8 feet), have produced the hybrid E. ×nymansensis, hardier than E. cordifolia and tolerant of alkaline soils....
  • Eucryphia glutinosa (plant)
    E. cordifolia, which grows to a height of 12 m (40 feet), and E. glutinosa, up to 4.5 m (14.8 feet), have produced the hybrid E. ×nymansensis, hardier than E. cordifolia and tolerant of alkaline soils....
  • Euctemon (Greek scientist)
    ...a religious lunar calendar and the tropical year was the Metonic cycle. This was first devised about 432 bc by the astronomer Meton of Athens. Meton worked with another Athenian astronomer, Euctemon, and made a series of observations of the solstices, when the Sun’s noonday shadow cast by a vertical pillar, or gnomon, reaches its annual maximum or minimum, to determine the ...
  • Eucumbene, Lake (lake, New South Wales, Australia)
    one of Australia’s largest reservoirs (capacity 3,890,000 acre-feet [4,798,000,000 cubic m], surface area 56 square miles [145 square km]), the major storage facility of the Snowy Mountains Hydroelectric Scheme, in the Eastern Highlands, New South Wales, 55 miles (88 km) southwest of Canberra. Its dam (completed 1958)...
  • eudaemonism (ethics)
    in ethics, a self-realization theory that makes happiness or personal well-being the chief good for man. The Greek word eudaimonia means literally “the state of having a good indwelling spirit, a good genius”; and “happiness” is not at all an adequate translation of this word. Happiness, indeed, is usually thought of as a state of mind that res...
  • Eudaimon Arabia (ancient region, Arabia)
    in ancient geography, the comparatively fertile region in southwestern and southern Arabia (in present-day Asir and Yemen), a region that contrasted with Arabia Deserta in barren central and northern Arabia and with Arabia Petraea (“Stony Arabia”) in northwestern Arabia, which came under the suzerainty of imperial Rome. The Greeks and Romans chose the name because ...
  • eudaimonia (Greek philosophy)
    in ethics, a self-realization theory that makes happiness or personal well-being the chief good for man. The Greek word eudaimonia means literally “the state of having a good indwelling spirit, a good genius”; and “happiness” is not at all an adequate translation of this word. Happiness, indeed, is usually thought of as a state of mind that results from or......
  • eudaimonism (ethics)
    in ethics, a self-realization theory that makes happiness or personal well-being the chief good for man. The Greek word eudaimonia means literally “the state of having a good indwelling spirit, a good genius”; and “happiness” is not at all an adequate translation of this word. Happiness, indeed, is usually thought of as a state of mind that res...
  • eudalene (chemical compound)
    ...complexity of structure than the monoterpenes, and oxygenated sesquiterpenes are commonly encountered. Two arrangements of isoprene units are found in bicyclic sesquiterpenes, the cadalene and the eudalene types, and the carbon skeleton of a sesquiterpene may frequently be determined by heating it with sulfur or selenium to effect dehydrogenation to the corresponding naphthalenic hydrocarbons:....
  • Eudemian Ethics (work by Aristotle)
    ...is generally regarded as the most important of the three; it consists of a series of short treatises, possibly brought together by Aristotle’s son Nicomachus. In the 19th century the Eudemian Ethics was often suspected of being the work of Aristotle’s pupil Eudemus of Rhodes, but there is no good reason to doubt its authenticity. Interestingly, the Nicomachean.....
  • Eudemis of Rhodes (Greek philosopher)
    Greek philosopher who was a pupil of Aristotle and a friend of Theophrastus....
  • eudemonism (ethics)
    in ethics, a self-realization theory that makes happiness or personal well-being the chief good for man. The Greek word eudaimonia means literally “the state of having a good indwelling spirit, a good genius”; and “happiness” is not at all an adequate translation of this word. Happiness, indeed, is usually thought of as a state of mind that res...
  • Eudemos of Rhodes (Greek philosopher)
    Greek philosopher who was a pupil of Aristotle and a friend of Theophrastus....
  • “Eudemus” (work by Aristotle)
    ...though mostly they survive only in fragments. Like his master, Aristotle wrote initially in dialogue form, and his early ideas show a strong Platonic influence. His dialogue Eudemus, for example, reflects the Platonic view of the soul as imprisoned in the body and as capable of a happier life only when the body has been left behind. According to Aristotle, the......
  • Eudemus of Rhodes (Greek philosopher)
    Greek philosopher who was a pupil of Aristotle and a friend of Theophrastus....
  • Euderma (bat genus)
    Greek philosopher who was a pupil of Aristotle and a friend of Theophrastus.......
  • Eudes (duke of Aquitaine)
    Assured of Austrasia, Charles now attacked Neustria itself, finally subduing it in 724. This freed Charles to deal with hostile elements elsewhere. He attacked Aquitaine, whose ruler, Eudes (Odo), had been an ally of Ragenfrid, but Charles did not gain effective control of southern France until late in his reign. He also conducted long campaigns, some as late as the 730s, against the Frisians,......
  • Eudes (king of Franks)
    count of Paris and the first king of the West Franks (France) who was not of Merovingian or Carolingian blood....
  • Eudes de Châtillon-sur-Marne (pope)
    head of the Roman Catholic church (1088–99) who developed ecclesiastical reforms begun by Pope Gregory VII, launched the Crusade movement, and strengthened the papacy as a political entity....
  • Eudes de Cluny, Saint (French abbot)
    second abbot of Cluny (927–942) and an important monastic reformer....
  • Eudes de Lagery (pope)
    head of the Roman Catholic church (1088–99) who developed ecclesiastical reforms begun by Pope Gregory VII, launched the Crusade movement, and strengthened the papacy as a political entity....
  • Eudes de Lagny (pope)
    head of the Roman Catholic church (1088–99) who developed ecclesiastical reforms begun by Pope Gregory VII, launched the Crusade movement, and strengthened the papacy as a political entity....
  • Eudes I (count of Blois)
    Hugh’s reign was marked by the unavailing efforts of Charles of Lorraine (imprisoned 991) to assert himself and by continual conflict between Eudes I, count of Blois, and Fulk Nerra of Anjou, whom Hugh later supported. In 993 Eudes was aided by the bishop of Laon in an unsuccessful conspiracy to deliver Hugh and his son Robert over to Otto III. That no one was punished for the incident......
  • Eudes II (count of Blois)
    ...to Robert the Strong and remained in his family’s hands until about 940, when Theobald I (the Old) seized control of it and founded a line of counts of Blois. His successors, notably the fearsome Eudes II (996–1037), annexed the counties of Sancerre (1015) and Champagne (1019–23), thereby creating a principality comparable in strength to Flanders and more threatening to the...
  • Eudes, Saint John (French priest)
    founder of the Congregation of Jesus and Mary (Eudist Fathers), an order dedicated to the training of candidates for the priesthood and to the preaching of missions....
  • eudicot (plant group)
    One of the major changes in the understanding of the evolution of the angiosperms was the realization that the basic distinction among flowering plants is not between monocotyledon groups (monocots) and dicotyledon groups (dicots). Rather, plants thought of as being “typical dicots” have evolved from within another group that includes the more-basal dicots and the monocots together.....
  • Eudist Fathers (religious order)
    founder of the Congregation of Jesus and Mary (Eudist Fathers), an order dedicated to the training of candidates for the priesthood and to the preaching of missions....
  • Eudistylia (polychaete genus)
    ...head concealed with featherlike filamentous branchiae; body divided into thorax and abdomen; tube mucoid or calcareous; size, minute to 50 cm; examples of genera: Sabella, Eudistylia, Serpula, Hydroides.Order ArchiannelidaMinute, primitive, with ciliated epidermis;......
  • Eudocia (Byzantine empress)
    wife of the Eastern Roman emperor Theodosius II. She was a highly cultured woman who, in rivalry with her sister-in-law, the empress Pulcheria, exercised great influence over her husband until her withdrawal from Constantinople....
  • Eudocia Macrembolitissa (Byzantine empress)
    Byzantine empress and, in 1067 and 1071, regent, who has been called the wisest woman of her time....
  • Eudocimus albus (bird)
    Byzantine empress and, in 1067 and 1071, regent, who has been called the wisest woman of her time.......
  • Eudokia Makrembolitissa (Byzantine empress)
    Byzantine empress and, in 1067 and 1071, regent, who has been called the wisest woman of her time....
  • Eudorcas (mammal genus)
    ...two of the smaller species—Thomson’s gazelle and the red-fronted gazelle, which are closely related enough to be considered sibling, or even the same, species—have become the genus Eudorcas. The Gazella genus as traditionally defined includes eight species that occur only in Africa, five that occur only in Asia, and one species that occurs both in Africa and A...
  • Eudoxia (Byzantine queen)
    wife of, and a powerful influence over, the Eastern Roman emperor Arcadius (reigned 383–408)....
  • Eudoxia (tsarina of Russia)
    tsarina and first wife of Peter I the Great of Russia....
  • Eudoxus of Cnidus (Greek mathematician and astronomer)
    Greek mathematician and astronomer who substantially advanced proportion theory, contributed to the identification of constellations and thus to the development of observational astronomy in the Greek world, and established the first sophisticated, geometrical model of celestial motion. He also wrote on ge...
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