| epic | (noun) a long narrative poem telling of a hero's deeds | Synonyms: epic poem, epos, heroic poem |
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| epicalyx | (noun) a group of bracts simulating a calyx as in a carnation or hibiscus | Synonyms: calycle, calyculus, false calyx |
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| epicanthus | (noun) a vertical fold of skin over the nasal canthus; typical for many east Asian peoples; sometimes occurs in Down's syndrome | Synonyms: epicanthic fold |
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| epicardia | (noun) the short part of the esophagus extending downward from the diaphragm to the stomach | - |
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| epicardium | (noun) the innermost of the two layers of the pericardium | Synonyms: visceral pericardium |
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| epicarp | (noun) outermost layer of the pericarp of fruits as the skin of a peach or grape | Synonyms: exocarp |
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| epicene | (noun) one having both male and female sexual characteristics and organs; at birth an unambiguous assignment of male or female cannot be made | Synonyms: androgyne, epicene person, gynandromorph, hermaphrodite, intersex |
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| epicenter | (noun) the point on the Earth's surface directly above the focus of an earthquake | Synonyms: epicentre |
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| epicentre | (noun) the point on the Earth's surface directly above the focus of an earthquake | Synonyms: epicenter |
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| epicheirema | (noun) a syllogism in which some statement supporting one or both of the premises is introduced with the premises themselves. | - |
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| epicness | (noun) The quality or state of being momentously heroic, grand in scale or character. | - |
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| epicondyle | (noun) a projection on a bone above a condyle serving for the attachment of muscles and ligaments | - |
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| epicondylitis | (noun) painful inflammation of the muscles and soft tissues around an epicondyle | - |
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| epicranium | (noun) the muscle and aponeurosis and skin covering the cranium | - |
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| epicure | (noun) a person devoted to refined sensuous enjoyment (especially good food and drink) | Synonyms: bon vivant, epicurean, foodie, gastronome, gourmet |
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| epicurean | (noun) a person devoted to refined sensuous enjoyment (especially good food and drink) | Synonyms: bon vivant, epicure, foodie, gastronome, gourmet |
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| epicureanism | (noun) a doctrine of hedonism that was defended by several ancient Greek philosophers | - |
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| epicurism | (noun) the disposition and habits of an epicure | - |
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| epicycle | (noun) a circle that rolls around (inside or outside) another circle; generates an epicycloid or hypocycloid | - |
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| epicycloid | (noun) a line generated by a point on a circle rolling around another circle | - |
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| epidemic | (noun) a widespread outbreak of an infectious disease; many people are infected at the same time | - |
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| epidemiologist | (noun) a medical scientist who studies the transmission and control of epidemic diseases | - |
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| epidemiology | (noun) the branch of medical science dealing with the transmission and control of disease | - |
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| epidendron | (noun) any of various orchids of the genus Epidendrum | - |
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| epidermis | (noun) the outer layer of the skin covering the exterior body surface of vertebrates | Synonyms: cuticle |
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| epidiascope | (noun) an optical projector that gives images of both transparent and opaque objects | - |
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| epididymis | (noun) a convoluted tubule in each testis; carries sperm to vas deferens | - |
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| epididymitis | (noun) painful inflammation of the epididymis | - |
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| epidural | (noun) regional anesthesia resulting from injection of an anesthetic into the epidural space of the spinal cord; sensation is lost in the abdominal and genital and pelvic areas; used in childbirth and gynecological surgery | Synonyms: epidural anaesthesia, epidural anesthesia |
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| epigastrium | (noun) the region lying on or over the stomach (just below the sternum) | - |
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| epigenesis | (noun) a geological change in the mineral content of rock after the rock has formed | - |
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| epiglottis | (noun) a flap of cartilage that covers the windpipe while swallowing | - |
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| epiglottitis | (noun) inflammation of the epiglottis; characterized by fever and a severe sore throat and difficulty in swallowing | - |
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| epigon | (noun) an inferior imitator of some distinguished writer, artist, or musician | Synonyms: epigone |
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| epigone | (noun) an inferior imitator of some distinguished writer, artist, or musician | Synonyms: epigon |
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| epigram | (noun) a witty saying | Synonyms: quip |
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| epigraph | (noun) an engraved inscription | - |
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| (noun) a quotation at the beginning of some piece of writing | - |
| epigraphy | (noun) the study of ancient inscriptions | - |
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| epikeratophakia | (noun) using a piece of donated corneal tissue to repair the eye of someone who has had a cataract removed | - |
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| epilation | (noun) the act of removing hair (as from an animal skin) | Synonyms: depilation |
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| (noun) loss of hair; the result of removing hair | - |
| epilator | (noun) a cosmetic for temporary removal of undesired hair | Synonyms: depilator, depilatory |
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| epilepsy | (noun) a disorder of the central nervous system characterized by loss of consciousness and convulsions | - |
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| epileptic | (noun) a person who has epilepsy | - |
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| epilith | (noun) A plant, fungus, or other organism that grows upon rock. | - |
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| epilog | (noun) a short passage added at the end of a literary work | Synonyms: epilogue |
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| (noun) a short speech (often in verse) addressed directly to the audience by an actor at the end of a play | Synonyms: epilogue |
| epilogue | (noun) a short passage added at the end of a literary work | Synonyms: epilog |
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| (noun) a short speech (often in verse) addressed directly to the audience by an actor at the end of a play | Synonyms: epilog |
| epimythium | (noun) a moral at the end of a story. | - |
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| epinephrin | (noun) a catecholamine secreted by the adrenal medulla in response to stress (trade name Adrenalin); stimulates autonomic nerve action | Synonyms: Adrenalin, adrenaline, epinephrine |
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| epinephrine | (noun) a catecholamine secreted by the adrenal medulla in response to stress (trade name Adrenalin); stimulates autonomic nerve action | Synonyms: Adrenalin, adrenaline, epinephrin |
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| epipelon | (noun) cyanobacteria and eukaryotic algae that live on or in association with fine-grained substrata. | - |
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| epiphany | (noun) a divine manifestation | - |
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| epiphenomenon | (noun) a secondary phenomenon that is a by-product of another phenomenon | - |
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| epiphonema | (noun) a sentence that is an exclamation, a general or striking comment, or a succinct summary of what has previously been said. | - |
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| epiphora | (noun) repetition of the ends of two or more successive sentences, verses, etc. | Synonyms: epistrophe |
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| epiphyllum | (noun) any cactus of the genus Epiphyllum having flattened jointed irregularly branching stems and showy tubular flowers | Synonyms: orchid cactus |
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| epiphysis | (noun) the end of a long bone; initially separated from the main bone by a layer of cartilage that eventually ossifies so the parts become fused | - |
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| (noun) a small endocrine gland in the brain; situated beneath the back part of the corpus callosum; secretes melatonin | Synonyms: epiphysis cerebri, pineal body, pineal gland |
| epiphyte | (noun) plant that derives moisture and nutrients from the air and rain; usually grows on another plant but not parasitic on it | Synonyms: aerophyte, air plant, epiphytic plant |
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| epiplexis | (noun) a rhetorical device in which the speaker reproaches the audience in order to incite or convince them | - |
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| epipsammon | (noun) Microscopic flora and fauna found on the surface of and/or attached to sand grains. | - |
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| episcia | (noun) any plant of the genus Episcia; usually creeping and stoloniferous and of cascading habit; grown for their colorful foliage and flowers | - |
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| episcleritis | (noun) inflammation of the sclera of the eye | - |
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| episcopacy | (noun) the collective body of bishops | Synonyms: episcopate |
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| episcopate | (noun) the office and dignity of a bishop | Synonyms: bishopry |
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| (noun) the collective body of bishops | Synonyms: episcopacy |
| (noun) the territorial jurisdiction of a bishop | Synonyms: bishopric, diocese |
| (noun) the term of office of a bishop | - |
| episiotomy | (noun) surgical incision of the perineum to enlarge the vagina and so facilitate delivery during childbirth | - |
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| episode | (noun) film consisting of a succession of related shots that develop a given subject in a movie | Synonyms: sequence |
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| (noun) a part of a broadcast serial | Synonyms: installment, instalment |
| (noun) a brief section of a literary or dramatic work that forms part of a connected series | - |
| (noun) a happening that is distinctive in a series of related events | - |
| episodicity | (noun) The quality of being sporadic, happening infrequently and irregularly. | - |
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| episome | (noun) DNA that is not incorporated into the genome but is replicated together with the genome (especially in bacterial cells) | - |
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| epispadias | (noun) a congenital abnormality in males in which the urethra is on the upper surface of the penis | - |
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| episperm | (noun) protective outer layer of seeds of flowering plants | Synonyms: seed coat, testa |
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| epistasis | (noun) the suppression of a gene by the effect of an unrelated gene | Synonyms: hypostasis |
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| epistaxis | (noun) bleeding from the nose | Synonyms: nosebleed |
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| episteme | (noun) the body of ideas that determine the knowledge that is intellectually certain at any particular time | - |
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| epistemologist | (noun) a specialist in epistemology | - |
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| epistemology | (noun) the philosophical theory of knowledge | - |
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| epistle | (noun) a specially long, formal letter | - |
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| epistrophe | (noun) repetition of the ends of two or more successive sentences, verses, etc. | Synonyms: epiphora |
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| epitaph | (noun) an inscription on a tombstone or monument in memory of the person buried there | - |
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| (noun) a summary statement of commemoration for a dead person | - |
| epitaxy | (noun) growing a crystal layer of one mineral on the crystal base of another mineral in such a manner that its crystalline orientation is the same as that of the substrate | - |
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| epithalamium | (noun) an ode honoring a bride and bridegroom | - |
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| epithelioma | (noun) a malignant tumor of the epithelial tissue | - |
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| epithelium | (noun) membranous tissue covering internal organs and other internal surfaces of the body | Synonyms: epithelial tissue |
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| epithet | (noun) descriptive word or phrase | - |
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| (noun) a defamatory or abusive word or phrase | Synonyms: name |
| epitome | (noun) a standard or typical example | Synonyms: image, paradigm, prototype |
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| (noun) a brief abstract (as of an article or book) | - |
| epitope | (noun) the site on the surface of an antigen molecule to which an antibody attaches itself | Synonyms: antigenic determinant, determinant |
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| epixylon | (noun) organisms that are attached to submerged wood surfaces in aquatic ecosystems. | - |
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| epizoan | (noun) any external parasitic organism (as fleas) | Synonyms: ectoparasite, ectozoan, ectozoon, epizoon |
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| epizoon | (noun) any external parasitic organism (as fleas) | Synonyms: ectoparasite, ectozoan, ectozoon, epizoan |
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