Eocene The Eocene epoch is a major division of the geologic timescale and the second epoch of the Palaeogene geologic period in the Cenozoic era. The Eocene spans the time from the end of the Paleocene epoch to the beginning of the Oligocene epoch. The start of the Eocene is marked by the emergence of the first modern mammals.
	Eoraptor Eoraptor was one of the world's earliest dinosaurs. It was a Biped Carnivore that lived between 230 and 225 million years ago, in what is now the northwestern region of Argentina. The type species is Eoraptor lunensis, which means 'dawn plunderer [from the Valley] of the Moon', denoting where it was originally discovered.
	Eos Eos was, in Greek mythology, the Titan goddess of the dawn, who rose from her home at the edge of Oceanus, the Ocean that surrounds the world, to herald her brother Helios, the sun. As the dawn goddess, she opened the gates of heaven so that Helios could ride his chariot across the sky every day.
	Eosin Eosin is an orange-pink dye derived from coal tar. It can be used to stain cytoplasm, collagen and Muscle#Muscular Composition for examination under the microscope. There are actually two very closely related compounds commonly referred to as eosin. Most often used is eosin Y; it has a very slightly yellowish cast.
	Epacris Epacris is a genus of about 35-40 species of flowering plants in the family Ericaceae, though formerly often treated in a separate family Epacridaceae. The genus is native to eastern and southeastern Australia, New Caledonia and New Zealand. The species are known as heaths or Australian heaths.
	Epaulette Epaulette , a French language word meaning "little shoulders", originally meant only one type of ornamental shoulder piece or decoration used as insignia or military rank by the armed force and other organizations. Epaulettes are fastened to the shoulder by a shoulder strap, parallel to the shoulder seam and the button near the collar.
	Ephedrine Ephedrine is a sympathomimetic amine similar in structure to the synthetic derivatives amphetamine and methamphetamine. Ephedrine is commonly used as a stimulant, appetite suppressant, concentraton aid, decongestant and to treat hypotension associated with regional anaesthesia.
	Ephesus Ephesus or Efes , was one of the great cities of the Ionian Greeks in Anatolia, located in Lydia where the Cayster river flows into the Aegean Sea.In modern day, it is 3 Kms near to Seluk Turkey). . It was founded by colonists principally from Athens.
	Ephippidae Ephippidae is the fish family containing the spadefishes. There are about eight genera with a total of 20 species, mostly marine. The most well-known species are probably those in the reef genus Platax, the batfishes, which are kept as aquarium fish. They are spade-shaped, laterally compressed, and very symmetrical triangular dorsal and anal fins.
	Ephippiorhynchus Ephippiorhynchus is a small genus of storks. It contains two very large birds, more than 140cm tall with a 230-270cm wingspan. Both are mainly black and white, with huge colourful, mainly red and black bills. The sexes of these species are similarly plumaged, but differ in eye colour.
	Epicenter The epicenter or epicentre is the point on the Earth's surface that is directly above the point where an earthquake or other underground explosion originates. The epicenter is directly above the hypocenter, the actual location of the energy release inside the earth. Seismic waves propagate spherically out from the hypocenter.
	Epicurus Epicurus was an Greek philosophy, the founder of Epicureanism, one of the most popular schools of Greek philosophy.
	Epicycloid In geometry, an epicycloid is a plane curve produced by tracing the path of a chosen point of a circle — called epicycle — which rolls around without slipping around a fixed circle. It is a particular kind of roulette. If the smaller circle has radius r, and the larger circle has radius R=kr, then the
	Epidemiology Epidemiology is the scientific study of factors affecting the health and illness of individuals and populations, and serves as the foundation and logic of interventions made in the interest of public health and preventive medicine. It is considered a cornerstone methodology of public health research, and is highly regarded in evidence-based medicine for identifying risk factors for disease and determining optimal treatment approaches to clinical practice.
	Epidendrum Epidendrum, is a large neotropical genus of the orchid family. With more than 1,100 species, some authors refer to it as a mega-genus. The genus name refers to its epiphyte growth habit. When Carolus Linnaeus named this genus in 1763, he included in this genus all the epiphytic orchids known to him.
	Epigaea Epigaea is a genus of three species of flowering plants in the Ericaceae. They are small creeping shrubs growing to 10-20 cm tall, forming large patches. The leaf are evergreen, alternate, simple, entire, and 2-10 cm long. The flowers are small, white or pink, with a five-lobed tubular corolla, produced in mid spring.
	Epilepsy Epilepsy is a common chronic neurology condition that is characterized by recurrent unprovoked epileptic seizures. It affects approximately 50 million people worldwide. It is usually controlled, but not cured, with medication although surgery may be considered in difficult cases.
	Epilobium Epilobium is a genus of about 160-200 species of flowering plants in the family Onagraceae, native to temperate and subarctic regions of both hemispheres. Most species are known by the common name Willowherb; other names for individual species include Fireweed, Zauschneria, California-fuchsia, Spike-primrose, Hummingbird Flower, and Hummingbird Trumpet.
	Epimedium Epimedium, also known as Barrenwort, Bishop's Hat, Fairy Wings, Horny Goatweed, or Yin Yang Huo, is a genus of about 25 species of herbaceous flowering plants in the family Berberidaceae. They are native to southern Europe, and central, southern and eastern Asia.
	Epinephelus Epinephelus is a genus of groupers. They are large sea fish.
	Epipactis Epipactis Johann Gottfried Zinn, 1757, or Helleborine is a genus of orchids comprised of approximately 70 terrestrial species. They occur in temperate and subtropical climates of The Americas, Asia, and Europe. These orchids grow in open spaces in forests, in undergrowth, on calcareous soils and are often found in wet dune-slacks near the sea.
	Epiphyllum Epiphyllum is a genus of 19 species of epiphyte plants in the cactus family, native to Central America. Common names for these species include orchid cacti and leaf cacti, though the latter also refers to the genus Pereskia. The stems are broad and flat, 1-5 cm broad, 3-5 mm thick, usually with lobed edges.
	Epiphyte An Epiphyte is any plant that grows upon or attached to another living plant. The term is from the Greek epi- and phyton . These plants are sometimes called "air plants" because they do not root in soil. However, there are many aquatic species of algae, including seaweeds, that are epiphytes on other aquatic plants .
	Epipremnum aureum de:Efeutute
	Episcia Episcia is a genus of about 8 species belonging to the flowering plant family Gesneriaceae. The species are found in the tropical regions of Central America and South America. The species are perennial herbaceous plants characterized by a stoloniferous habit, red flowers, and frequently have marked or patterned leaves.
	Episiotomy An episiotomy International Phonetic Alphabet for English is a surgical incision through the perineum made to enlarge the vagina and assist childbirth. The incision can be midline or at an angle from the posterior end of the vulva, is performed under local anaesthetic and is sutured closed after delivery.
	Epistasis Epistasis takes place when the action of one gene is modified by one or more others that assort independently.. The gene whose phenotype is expressed is said to be epistatic, while the phenotype altered or suppressed is said to be hypostasis. Examples of tightly linked genes having epistatic effects on fitness are found in supergenes and the human major histocompatibility complex genes).
	Epistemology Epistemology or theory of knowledge is the branch of philosophy that studies the nature and scope of knowledge. The term "epistemology" is based on the Greek language words "ep?st?? or episteme" and "????? or logos" ; it is thought to have been coined by the Scottish philosopher James Frederick Ferrier.
	Epona In Celtic mythology and Roman mythology and Gallo-Roman religion mythology, Epona was the goddess of horses, donkeys, mules. She was particularly a goddess of fertility, as shown by her attributes of a patera, cornucopia, and the presence of foals in some sculptures.
	Epoxy Epoxy or polyepoxide is a thermosetting epoxide polymer that cures when mixed with a catalyst agent or "hardener". Most common epoxy resins are produced from a reaction between epichlorohydrin and bisphenol-A. The first commercial attempts to prepare resins from epichlorohydrin occurred in 1927 in the United States.
	EPROM An EPROM, or erasable programmable read-only memory, is a type of computer memory integrated circuit that retains its data when its power supply is switched off. In other words, it is non-volatile. It is an array of Floating Gate Transistor individually programmed by an electronic device that supplies higher voltages than those normally used in electronic circuits.
	Epstein The surname "Eppstein" is one of the oldest Jewish family family names in the Slavic peoples countries. Nathan ha-Levi Eppstein and Solomon ben Jacob ha-Levi Eppstein are mentioned in the responsa of Rabbi Moses Minz about the middle of the fifteenth century.
	Equaliser In mathematics, an equaliser, or equalizer, is a set of arguments where two or more functions have equality values. An equaliser is the solution set of an equation. In certain contexts, a difference kernel is the equaliser of exactly two functions.
	Equalization In audio processing, equalization is the process of restoring the frequency envelope of a sound. In passing through any channel, data is temporal/frequency spreading occurs. Etymology, it means to correct, or make equal, the frequency response of a signal. The term "equalizer" is eroneous applied as a general term for audio filters.
	Equator The equator is an imaginary circle drawn around a planet at a distance halfway between the Geographical poles. The equator divides the planet into a Northern Hemisphere and a Southern Hemisphere. The latitude of the equator is, by definition, 0. The length of Earth's equator is about 40,075.0 kilometre, or 24,901.5 miles.
	Equatorial Guinea Equatorial Guinea, officially the Republic of Equatorial Guinea, is a country in West Middle Africa, one of the smallest in continental Africa. It is bordered by Cameroon on the north, Gabon on the south and east, and the Gulf of Guinea on the west, where the islands of So Tom and Prncipe lie to its southwest.
	Equidae Equidae is the family of horse-like animals, order Perissodactyla. It is sometimes known as the horse family. Apart from the horses, other extant equids include the donkey, the four zebras and the onager. All of these are in the genus Equus.
	Equilateral In geometry, an equilateral polygon has all sides of the same length. An equilateral polygon which is convex and a Cyclic polygon, is a regular polygon. An equilateral triangle is a triangle of equal edge lengths. All equilateral triangles are similar to each other with 60 degree angles.For quadrilaterals the square and a rhombus are equilateral.
	Equilibrium constant In chemistry, the equilibrium constant is a quantity characterizing a chemical equilibrium in a chemical reaction which is a useful tool to determine the concentration of various reactants or products in a system where chemical equilibrium occurs.
	Equinox An equinox in astronomy is the moment when the Sun can be observed to be directly above the equator. The event occurs twice a year, around March 20 and September 23. More technically, the equinox happens when the Sun is at one of two opposite points on the celestial sphere where the celestial equator and ecliptic intersect.
	Equity Equity is the name given to the set of law principles, in countries following the England common law tradition , which supplement strict rules of law where their application would operate harshly, so as to achieve what is sometimes referred to as "natural justice." It is often confusingly contrasted with "law," which in this context refers to "statutory law" , and "case law" .
	Eranthis Eranthis is a genus of eight species of flowering plants in the family Ranunculaceae, native to southern Europe and east across Asia to Japan. They are herbaceous perennial plants growing to 10-15 cm tall. The flowers are yellow, and among the first to appear in spring, as early as January in mild climates, though later where winter snowpack persists; they are frost-tolerant and readily survive fresh snow cover unharmed.
	Eraser An eraser, primarily known as a rubber in British English, is an article of stationery that is used for removing pencil writings. Erasers have a rubbery consistency, and they are often white, brown or pink although with modern materials they can be any colour at all.
	Erasure Erasure is an England synth pop Duet band consisting of keyboardist Vince Clarke and singer Andy Bell. Erasure entered the music scene in 1985 with their debut single "Who Needs Love". Beginning in late 1986 with the release of their single "Sometimes", Erasure established themselves on the UK singles chart; through 1995, Erasure was the greatest pop phenomenon in Britain since ABBA.
	Erato Erato was a Greek mythology Muse, represented with a wreath of myrtle and roses taking a lyre, or but taking between her hands one small kithara; to her feet there are 2 turtle-doves eating seeds off the floor. Other times she is represented taking between her hands a golden arrow, remembering to the "eros", that feeling that herself inspires to everybody and in occasions she's accompanied of the god Eros taking a flushed torch.
	Eratosthenes Eratosthenes was a Hellenistic mathematician, geographer and astronomer. His contemporaries nicknamed him beta Beta because he supposedly proved himself to be the second in the mediterranean world in many fields. He is noted for devising a system of latitude and longitude, and for being the first known to have calculated the circumference of the Earth.
	Erection An erection of the penis occurs when two tubular structures that run the length of the penis, the corpora cavernosa, become engorged with venous blood. This may result from any of various stimuli. The corpus spongiosum is a single tubular structure located just below the corpora cavernosa, which contains the urethra, through which urine and semen pass during urination and ejaculation, respectively.
	Ergocalciferol Ergocalciferol is a form of Vitamin D, also called vitamin D2. It has the systematic name "(3,5Z,7E,22E)-9,10-secoergosta-5,7,10(19),22-tetraen-3-ol". It is created from viosterol, which in turn is created when ultraviolet light activates ergosterol. External links
	Ergonovine Ergonovine, also known as ergometrine, d-lysergic acid beta-propanolamide, is one of primary ergot alkaloids and an alkaloid of many species of morning glory, too. It is a member of the Ergoline family and chemically similar to LSD, Ergine, and Lysergic Acid.
	Ergosterol Ergosterol, a sterol, is the biological precursor to Vitamin D. It is turned into viosterol by ultraviolet light, and is then converted into ergocalciferol, which is a form of Vitamin D. Ergosterol is a component of fungus cell membranes, serving the same function that cholesterol serves in animal cells.
	Ergot Ergot is the common name of a fungus in the genus Claviceps. The fungus is parasitic on certain grains and grasses. The form the fungus takes to over-winter is called a sclerotium, and this small structure is what is usually referred to as 'ergot', although referring to the members of the Claviceps genus as 'ergot' is also correct.
	Erica Erica is a genus of over 700 species of flowering plants in the family Ericaceae; the English names, both shared with some other closely related plants, are heath or heather. Most of the species are small shrubs from 0.2-1.5 m high, though some are taller; the tallest are E.
	Erica carnea Erica carnea is a species of Erica native to mountainous areas of central and southern Europe in the eastern Alps, where it grows in Pinophyta woodlands or stony slopes. It is a low-growing subshrub reaching 10-25 cm tall, with evergreen needle-like leaf 4-8 mm long, borne in whorls of four.
	Erica cinerea Erica cinerea is a species of heather, native to western and central Europe. It is a low shrub growing to 15-60 cm tall, with fine needle-like leaf 4-8 mm long arranged in whorls of three. The flowers are bell-shaped, purple, 4-7 mm long, produced in mid to late summer.
	Erica tetralix Erica tetralix is a species of Erica found in Atlantic Ocean areas of Europe, from southern Portugal to central Norway, as well as a number of boggy regions further from the coast in Central Europe. In bogs, wet heaths and damp coniferous woodland, Erica tetralix can become a dominant part of the flora.
	Ericaceae The plant family Ericaceae are mostly calcium oxide-hating or calcifuge plants that thrive in acid soils. The family Ericaceae includes numerous plants from mostly temperate climates: cranberry, blueberry, heath, Calluna vulgaris, huckleberry, azalea and rhododendron are well-known examples.
	Ericales The Ericales are a large and diverse order of dicotyledons. The order is represented with many various life forms, starting from trees and shrubes, to lianas and herbaceous plants. Together with ordinary autophyte plants, the Ericales include chlorophyll-deficient myco-heterotrophic plants and carnivorous plants .
	Erich Mendelsohn Translation in progress Erich Mendelsohn was a Germany Jewish architect, known for his expressionism buildings in the 1920s, the first in their style.
	Erich von Stroheim Erich von Stroheim was a filmmaker and actor, noted for his arrogant Teutonic character parts. As an actor, he became known as "The Man You Love to Hate" because of the many villains he played.
	Erie Canal The Erie Canal is a canal in New York State, United States, that runs from the Hudson River to Lake Erie, connecting the Great Lakes with the Atlantic Ocean. Although the canal was first proposed in 1699, it was not until 1798 that the Niagara Canal Company was incorporated and commenced preparations for building.
	Erigeron Erigeron is a genus of about 200 species of flowering plants in the family Asteraceae. The genus has a cosmopolitan distribution with the highest species diversity in North America. The most widely used common name, fleabane, is shared with related plants in several other genera; another common name is summer starwort.
	Erik Axel Karlfeldt Erik Axel Karlfeldt was a Sweden poet whose highly symbolist poetry masquerading as regionalism was extremely popular and won him the Nobel Prize in Literature posthumously in 1931; he had refused it in 1918. Karlfeldt was born into a farmer's family in Karlbo, in the province of Dalarna.
	Erik Satie Eric Alfred Leslie Satie was a France composer, pianist and writer. He preferred spelling his name as Erik Satie, dating back to his first composition in 1884. He wrote articles for several periodicals; there appears to have been a brief period in the late 1880s during which he published articles under the pseudonym Virginie Lebeau, although in later life he prided himself on always publishing his work under his own name.
	Erinyes In Greek mythology the Erinyes or Eumenides were female personifications of vengeance. When a formulaic oath in the Iliad invokes "those who beneath the earth punish whoever has sworn a false oath"—"the Erinyes are simply an embodiment of the act of self-cursing contained in the oath" .
	Eriobotrya Eriobotrya is a genus of about ten species of large evergreen shrubs and small trees in the family Rosaceae, native to east and southeast Asia. By far the best known species is the Loquat, E. japonica, grown for its edible fruit. Eriobotrya species are used as food plants by the larvae of some Lepidoptera species including Hypercompe.
	Eriocaulaceae The Eriocaulaceae or pipewort family is a family of monocotyledonous flowering plants in the order Poales. The family is large, with about 1,150-1,200 species described in ten genera. The family is widely distributed, with the centers of diversity for the group occurring in tropical regions, particularly the Americas.
	Eriocaulon Eriocaulon is a genus of about 400 species of monocotyledonous flowering plants in the family Eriocaulaceae. The genus is widely distributed, with the centers of diversity for the group occurring in tropical regions, particularly southern Asia and the Americas.
	Eriogonum Eriogonum is the botanical name for a genus of flowering plants, in the family Polygonaceae. The genus is found in North America and is known as Wild Buckwheat. This is a highly species-rich genus, and indications are that active speciation is continuing. It includes some common wildflowers such as the California Buckwheat (Eriogonum fasciculatum)
	Eriophyllum Eriophyllum, commonly known as the woolly sunflowers, is a genus of annaul or herbaceous perennial plants native to western North America, with a concentraiton of narrow endemics in the California Floristic Province. Eriophyllum species are used as food plants by the larvae of some Lepidoptera species including Phymatopus.
	Erithacus Erithacus is a genus of small passerine birds formerly classed as members of the Thrush family, but now considered to be Old World flycatchers. The three species are: * European Robin, Erithacus rubecula * Japanese Robin, Erithacus akahige * Ryukyu Robin, Erithacus komadori