| ecarte | (noun) a card game for 2 players; played with 32 cards and king high | - |
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| eccentric | (noun) a person with an unusual or odd personality | Synonyms: eccentric person, flake, geek, oddball |
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| (noun) a person of a specified kind (usually with many eccentricities) | Synonyms: case, character, type |
| eccentricity | (noun) strange and unconventional behavior | - |
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| (noun) a circularity that has a different center or deviates from a circular path | - |
| (noun) (geometry) a ratio describing the shape of a conic section; the ratio of the distance between the foci to the length of the major axis | - |
| ecchymosis | (noun) the escape of blood from ruptured blood vessels into the surrounding tissue to form a purple or black-and-blue spot on the skin | - |
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| (noun) the purple or black-and-blue area resulting from a bruise | - |
| ecclesiastic | (noun) a clergyman or other person in religious orders | Synonyms: churchman, cleric, divine |
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| ecclesiasticism | (noun) excessive adherence to ecclesiastical forms and activities | - |
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| (noun) religion appropriate to a church and to ecclesiastical principles and practices | - |
| ecclesiology | (noun) the branch of theology concerned with the nature and the constitution and the functions of a church | - |
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| eccyesis | (noun) pregnancy resulting from gestation elsewhere than in the uterus | Synonyms: ectopic gestation, ectopic pregnancy, extrauterine gestation, extrauterine pregnancy, metacyesis |
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| ecdysiast | (noun) a performer who provides erotic entertainment by undressing to music | Synonyms: exotic dancer, peeler, stripper, striptease, striptease artist, stripteaser |
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| ecdysis | (noun) periodic shedding of the cuticle in arthropods or the outer skin in reptiles | Synonyms: molt, molting, moult, moulting |
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| ecdysteroid | (noun) #DD: The name 'ecdysteroid' refers to the insect moulting and sex hormones which include ecdysone and its homologues such as 20-hydroxyecdysone. | - |
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| ecesis | (noun) (ecology) the process by which a plant or animal becomes established in a new habitat | Synonyms: establishment |
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| echelon | (noun) a diffraction grating consisting of a pile of plates of equal thickness arranged stepwise with a constant offset | - |
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| (noun) a body of troops arranged in a line | - |
| (noun) status in a society or organization | - |
| echidna | (noun) a burrowing monotreme mammal covered with spines and having a long snout and claws for hunting ants and termites; native to Australia | Synonyms: anteater, spiny anteater |
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| (noun) a burrowing monotreme mammal covered with spines and having a long snout and claws for hunting ants and termites; native to New Guinea | Synonyms: anteater, spiny anteater |
| echinocactus | (noun) any cactus of the genus Echinocactus; strongly ribbed and very spiny; southwestern United States to Brazil | Synonyms: barrel cactus |
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| echinococcosis | (noun) infestation with larval echinococci (tapeworms) | Synonyms: hydatid disease, hydatidosis |
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| echinococcus | (noun) tapeworms whose larvae are parasitic in humans and domestic animals | - |
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| echinoderm | (noun) marine invertebrates with tube feet and five-part radially symmetrical bodies | - |
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| echinus | (noun) ovolo molding between the shaft and the abacus of a Doric column | - |
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| echo | (noun) an imitation or repetition | - |
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| (noun) the repetition of a sound resulting from reflection of the sound waves | Synonyms: replication, reverberation, sound reflection |
| (noun) a reflected television or radio or radar beam | - |
| (noun) a close parallel of a feeling, idea, style, etc. | - |
| (noun) a reply that repeats what has just been said | - |
| echocardiogram | (noun) a graphical image of the heart produced by an echocardiograph | - |
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| echocardiograph | (noun) a sonograph that creates an image of the heart and its abnormalities | - |
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| echocardiography | (noun) a noninvasive diagnostic procedure that uses ultrasound to study to structure and motions of the heart | - |
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| echoencephalogram | (noun) a graphical image of the brain produced by an echoencephalograph | - |
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| echoencephalograph | (noun) a sonograph that creates an image of the brain and its abnormalities | - |
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| echoencephalography | (noun) a noninvasive diagnostic procedure that uses ultrasound to study the anatomy of the brain | - |
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| echogram | (noun) an image of a structure that is produced by ultrasonography (reflections of high-frequency sound waves); used to observe fetal growth or to study bodily organs | Synonyms: sonogram |
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| echograph | (noun) An instrument used to record an echogram. | - |
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| echography | (noun) using the reflections of high-frequency sound waves to construct an image of a body organ (a sonogram); commonly used to observe fetal growth or study bodily organs | Synonyms: sonography, ultrasonography, ultrasound |
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| echolalia | (noun) (psychiatry) mechanical and meaningless repetition of the words of another person (as in schizophrenia) | - |
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| (noun) an infant's repetition of sounds uttered by others | - |
| echolocation | (noun) determining the location of something by measuring the time it takes for an echo to return from it | Synonyms: echo sounding |
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| echovirus | (noun) any of a group of viruses associated with various diseases including viral meningitis and mild respiratory disorders and diarrhea in newborn infants | - |
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| eclair | (noun) oblong cream puff | - |
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| eclampsia | (noun) a toxic condition characterized by convulsions and possibly coma during or immediately after pregnancy | - |
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| eclat | (noun) brilliant or conspicuous success or effect | - |
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| (noun) ceremonial elegance and splendor | Synonyms: pomp |
| (noun) enthusiastic approval | Synonyms: acclaim, acclamation, plaudit, plaudits |
| eclectic | (noun) someone who selects according to the eclectic method | Synonyms: eclecticist |
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| eclecticism | (noun) making decisions on the basis of what seems best instead of following some single doctrine or style | Synonyms: eclectic method |
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| eclecticist | (noun) someone who selects according to the eclectic method | Synonyms: eclectic |
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| eclipse | (noun) one celestial body obscures another | Synonyms: occultation |
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| eclipsis | (noun) omission or suppression of parts of words or sentences | Synonyms: ellipsis |
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| ecliptic | (noun) the great circle representing the apparent annual path of the sun; the plane of the Earth's orbit around the sun; makes an angle of about 23 degrees with the equator | - |
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| eclogue | (noun) a short poem descriptive of rural or pastoral life | Synonyms: bucolic, idyl, idyll |
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| ecobabble | (noun) using the technical language of ecology to make the user seem ecologically aware | - |
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| ecologist | (noun) a biologist who studies the relation between organisms and their environment | - |
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| ecology | (noun) the branch of biology concerned with the relations between organisms and their environment | Synonyms: bionomics, environmental science |
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| (noun) the environment as it relates to living organisms | - |
| econometrician | (noun) an economist who uses statistical and mathematical methods | Synonyms: econometrist |
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| econometrics | (noun) the application of mathematics and statistics to the study of economic and financial data | - |
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| econometrist | (noun) an economist who uses statistical and mathematical methods | Synonyms: econometrician |
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| economics | (noun) the branch of social science that deals with the production and distribution and consumption of goods and services and their management | Synonyms: economic science, political economy |
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| economiser | (noun) a frugal person who limits spending and avoids waste | Synonyms: economizer |
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| economist | (noun) an expert in the science of economics | Synonyms: economic expert |
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| economizer | (noun) a frugal person who limits spending and avoids waste | Synonyms: economiser |
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| economy | (noun) an act of economizing; reduction in cost | Synonyms: saving |
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| (noun) frugality in the expenditure of money or resources | Synonyms: thriftiness |
| (noun) the efficient use of resources | - |
| (noun) the system of production and distribution and consumption | Synonyms: economic system |
| ecosystem | (noun) a system formed by the interaction of a community of organisms with their physical environment | - |
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| ecoterrorism | (noun) violence carried out to further the political or social objectives of the environmentalists | Synonyms: eco-warfare, ecological terrorism, ecological warfare |
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| ecotourism | (noun) tourism to exotic or threatened ecosystems to observe wildlife or to help preserve nature | - |
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| ecphonesis | (noun) an exclamatory rhetorical device | Synonyms: exclamation |
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| ecrevisse | (noun) small crayfish of Europe and Asia and western North America | Synonyms: Old World crayfish |
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| (noun) tiny lobster-like crustaceans usually boiled briefly | Synonyms: crawdad, crawfish, crayfish |
| ecru | (noun) a very light brown | Synonyms: beige |
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| ecstasy | (noun) street names for methylenedioxymethamphetamine | Synonyms: Adam, cristal, disco biscuit, go, hug drug, X, XTC |
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| (noun) a state of being carried away by overwhelming emotion | Synonyms: exaltation, rapture, raptus, transport |
| (noun) a state of elated bliss | Synonyms: rapture |
| ectasia | (noun) dilatation or distension of a hollow organ | Synonyms: ectasis |
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| ectasis | (noun) dilatation or distension of a hollow organ | Synonyms: ectasia |
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| ectoblast | (noun) the outer germ layer that develops into skin and nervous tissue | Synonyms: ectoderm, exoderm |
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| ectoderm | (noun) the outer germ layer that develops into skin and nervous tissue | Synonyms: ectoblast, exoderm |
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| ectomorph | (noun) a person with a thin body | - |
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| ectomorphy | (noun) slender, weak, and lightweight | Synonyms: asthenic type |
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| ectoparasite | (noun) any external parasitic organism (as fleas) | Synonyms: ectozoan, ectozoon, epizoan, epizoon |
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| ectopia | (noun) abnormal position of a part or organ (especially at the time of birth) | - |
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| ectoplasm | (noun) the outer granule-free layer of cytoplasm | - |
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| (noun) (spiritualism) a substance supposed to emanate from the body of the medium during a trance | - |
| ectoproct | (noun) sessile mossy aquatic animal having the anus of the polyp outside the crown of tentacles | - |
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| ectotherm | (noun) an animal whose body temperature varies with the temperature of its surroundings; any animal except birds and mammals | Synonyms: poikilotherm |
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| ectozoan | (noun) any external parasitic organism (as fleas) | Synonyms: ectoparasite, ectozoon, epizoan, epizoon |
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| ectozoon | (noun) any external parasitic organism (as fleas) | Synonyms: ectoparasite, ectozoan, epizoan, epizoon |
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| ectrodactyly | (noun) congenital abnormality involving the absence of some fingers or toes | - |
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| ecumenicalism | (noun) (Christianity) the doctrine of the ecumenical movement that promotes cooperation and better understanding among different religious denominations: aimed at universal Christian unity | Synonyms: ecumenicism, ecumenism |
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| ecumenicism | (noun) (Christianity) the doctrine of the ecumenical movement that promotes cooperation and better understanding among different religious denominations: aimed at universal Christian unity | Synonyms: ecumenicalism, ecumenism |
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| ecumenism | (noun) (Christianity) the doctrine of the ecumenical movement that promotes cooperation and better understanding among different religious denominations: aimed at universal Christian unity | Synonyms: ecumenicalism, ecumenicism |
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| (noun) a movement promoting union between religions (especially between Christian churches) | Synonyms: oecumenism |
| eczema | (noun) generic term for inflammatory conditions of the skin; particularly with vesiculation in the acute stages | - |
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