davallia | (noun) any fern of the genus Davallia; having scaly creeping rhizomes | - |
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decalcomania | (noun) the art of transferring designs from specially prepared paper to a wood or glass or metal surface | - |
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(noun) either a design that is fixed to some surface or a paper bearing the design which is to be transferred to the surface | Synonyms: decal |
decidua | (noun) the epithelial tissue of the endometrium | - |
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delta | (noun) the 4th letter of the Greek alphabet | - |
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(noun) a low triangular area of alluvial deposits where a river divides before entering a larger body of water | - |
(noun) an object shaped like an equilateral triangle | - |
dementia | (noun) mental deterioration of organic or functional origin | Synonyms: dementedness |
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demerara | (noun) light brown cane sugar; originally from Guyana | Synonyms: demerara sugar |
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(noun) dark rum from Guyana | Synonyms: demerara rum |
(noun) a light brown raw cane sugar from Guyana | - |
derma | (noun) the deep vascular inner layer of the skin | Synonyms: corium, dermis |
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deuteranopia | (noun) dichromacy characterized by a lowered sensitivity to green light resulting in an inability to distinguish green and purplish-red | Synonyms: Daltonism, green-blindness |
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deutzia | (noun) any of various shrubs of the genus Deutzia having usually toothed opposite leaves and shredding bark and white or pink flowers in loose terminal clusters | - |
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dextrocardia | (noun) abnormal condition where the heart is located toward the right side of the chest | - |
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dhava | (noun) an Indian tree of the family Combretaceae that is a source of timber and gum | Synonyms: dhawa |
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dhawa | (noun) an Indian tree of the family Combretaceae that is a source of timber and gum | Synonyms: dhava |
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diapensia | (noun) any boreal low-growing evergreen plant of the genus Diapensia | - |
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diapheromera | (noun) a variety of stick insect | Synonyms: Diapheromera femorata |
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diarrhea | (noun) frequent and watery bowel movements; can be a symptom of infection or food poisoning or colitis or a gastrointestinal tumor | Synonyms: diarrhoea, looseness, looseness of the bowels |
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diarrhoea | (noun) frequent and watery bowel movements; can be a symptom of infection or food poisoning or colitis or a gastrointestinal tumor | Synonyms: diarrhea, looseness, looseness of the bowels |
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diaspora | (noun) the dispersion or spreading of something that was originally localized (as a people or language or culture) | - |
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(noun) the body of Jews (or Jewish communities) outside Palestine or modern Israel | - |
diastema | (noun) a gap or vacant space between two teeth | - |
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dichondra | (noun) a creeping perennial herb with hairy stems and orbicular to reniform leaves and small white to greenish flowers; used as a grass substitute in warm regions | Synonyms: Dichondra micrantha |
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dichromatopsia | (noun) a deficiency of color vision in which the person can match any given hue by mixing only two other wavelengths of light (as opposed to the three wavelengths needed by people with normal color vision) | Synonyms: dichromacy, dichromasy, dichromatism, dichromia |
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dichromia | (noun) a deficiency of color vision in which the person can match any given hue by mixing only two other wavelengths of light (as opposed to the three wavelengths needed by people with normal color vision) | Synonyms: dichromacy, dichromasy, dichromatism, dichromatopsia |
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diethylmalonylurea | (noun) a barbiturate used as a hypnotic | Synonyms: barbital, barbitone, diethylbarbituric acid, veronal |
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differentia | (noun) distinguishing characteristics (especially in different species of a genus) | - |
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difflugia | (noun) a protozoan with an ovoid shell of cemented sand grains | - |
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dika | (noun) African tree with edible yellow fruit resembling mangos; valued for its oil-rich seed and hardy green wood that resists termites | Synonyms: Irvingia gabonensis, wild mango, wild mango tree |
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dilemma | (noun) state of uncertainty or perplexity especially as requiring a choice between equally unfavorable options | Synonyms: quandary |
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dillenia | (noun) any of several evergreen trees or shrubs of the genus Dillenia grown for their foliage and nodding flowers resembling magnolias which are followed by fruit that is used in curries and jellies and preserves | - |
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diorama | (noun) a picture (or series of pictures) representing a continuous scene | Synonyms: cyclorama, panorama |
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diphtheria | (noun) acute contagious infection caused by the bacterium Corynebacterium diphtheriae; marked by the formation of a false membrane in the throat and other air passages causing difficulty in breathing | - |
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diplegia | (noun) paralysis of corresponding parts on both sides of the body | - |
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diploma | (noun) a document certifying the successful completion of a course of study | Synonyms: sheepskin |
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diplopia | (noun) visual impairment in which an object is seen as two objects | Synonyms: double vision |
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dipsomania | (noun) an intense persistent desire to drink alcoholic beverages to excess | Synonyms: alcoholism, potomania |
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disa | (noun) any orchid of the genus Disa; beautiful orchids with dark green leaves and usually hooded flowers; much prized as emblematic flowers in their native regions | - |
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discina | (noun) any fungus of the genus Discina | - |
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dita | (noun) evergreen tree of eastern Asia and Philippines having large leathery leaves and small green-white flowers in compact cymes; bark formerly used medicinally | Synonyms: Alstonia scholaris, devil tree, dita bark |
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diva | (noun) a distinguished female operatic singer; a female operatic star | Synonyms: prima donna |
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dobra | (noun) the basic unit of money on Sao Tome e Principe | - |
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docudrama | (noun) a film or TV program presenting the facts about a person or event | Synonyms: documentary, documentary film, infotainment |
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dogma | (noun) a doctrine or code of beliefs accepted as authoritative | - |
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(noun) a religious doctrine that is proclaimed as true without proof | Synonyms: tenet |
dombeya | (noun) any of various shrubs or small trees of the genus Dombeya grown for their rounded clusters of exquisite often sweet-scented flowers usually hanging beneath the leaves | - |
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donna | (noun) an Italian woman of rank | - |
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doodia | (noun) any fern of the genus Doodia having pinnate fronds with sharply dentate pinnae | Synonyms: rasp fern |
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dopa | (noun) amino acid that is formed in the liver and converted into dopamine in the brain | Synonyms: dihydroxyphenylalanine |
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doula | (noun) an assistant (often the father of the soon-to-be-born child) who provides support for a woman in labor by encouraging her to use techniques learned in childbirth-preparation classes | Synonyms: birthing coach, labor coach, monitrice |
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doura | (noun) sorghums of dry regions of Asia and North Africa | Synonyms: dourah, durra, Egyptian corn, Guinea corn, Indian millet |
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draba | (noun) any of numerous low-growing cushion-forming plants of the genus Draba having rosette-forming leaves and terminal racemes of small flowers with scapose or leafy stems; fruit is a dehiscent oblong or linear silique | - |
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dracaena | (noun) an agave that is often cultivated for its decorative foliage | - |
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drachma | (noun) formerly the basic unit of money in Greece | Synonyms: Greek drachma |
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(noun) a unit of apothecary weight equal to an eighth of an ounce or to 60 grains | Synonyms: drachm, dram |
drama | (noun) the quality of being arresting or highly emotional | - |
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(noun) the literary genre of works intended for the theater | - |
(noun) a dramatic work intended for performance by actors on a stage | Synonyms: dramatic play, play |
(noun) an episode that is turbulent or highly emotional | Synonyms: dramatic event |
drosophila | (noun) small fruit fly used by Thomas Hunt Morgan in studying basic mechanisms of inheritance | Synonyms: Drosophila melanogaster |
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duenna | (noun) a woman chaperon | - |
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dulciana | (noun) the organ stop having a tone of soft sweet string quality | - |
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dulcinea | (noun) a woman who is a man's sweetheart | Synonyms: ladylove |
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dura | (noun) the outermost (and toughest) of the 3 meninges | Synonyms: dura mater |
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durra | (noun) sorghums of dry regions of Asia and North Africa | Synonyms: doura, dourah, Egyptian corn, Guinea corn, Indian millet |
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dysaphia | (noun) a disorder in the sense of touch | - |
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dysarthria | (noun) impaired articulatory ability resulting from defects in the peripheral motor nerves or in the speech musculature | - |
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dyscalculia | (noun) impaired ability to learn grade-appropriate mathematics | - |
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dyschezia | (noun) difficulty in defecating (usually as a consequence of long continued voluntary suppression of the urge to defecate) | - |
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dyscrasia | (noun) an abnormal or physiologically unbalanced state of the body | - |
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dysgraphia | (noun) impaired ability to learn to write | - |
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dyskinesia | (noun) abnormality in performing voluntary muscle movements | - |
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dyslexia | (noun) impaired ability to learn to read | - |
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dyslogia | (noun) impaired ability to express ideas verbally; usually resulting from difficulties of reasoning (as in feeblemindedness or certain psychoses) | - |
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dysmenorrhea | (noun) painful menstruation | - |
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dysomia | (noun) impairment of the sense of smell | - |
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dysosmia | (noun) a disorder in the sense of smell | Synonyms: olfactory impairment, parosamia |
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dyspepsia | (noun) a disorder of digestive function characterized by discomfort or heartburn or nausea | Synonyms: indigestion, stomach upset, upset stomach |
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dysphagia | (noun) condition in which swallowing is difficult or painful | - |
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dysphasia | (noun) an impairment of language (especially speech production) that is usually due to brain damage | - |
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dysphonia | (noun) speech disorder attributable to a disorder of phonation | - |
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dysphoria | (noun) abnormal depression and discontent | - |
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dysplasia | (noun) abnormal development (of organs or cells) or an abnormal structure resulting from such growth | - |
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dyspnea | (noun) difficult or labored respiration | Synonyms: dyspnoea |
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dyspnoea | (noun) difficult or labored respiration | Synonyms: dyspnea |
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dyssynergia | (noun) inability to coordinate voluntary muscle movements; unsteady movements and staggering gait | Synonyms: ataxia, ataxy, motor ataxia |
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dysthymia | (noun) mild chronic depression | Synonyms: dysthymic depression |
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dystopia | (noun) a work of fiction describing an imaginary place where life is extremely bad because of deprivation or oppression or terror | - |
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(noun) state in which the conditions of life are extremely bad as from deprivation or oppression or terror | - |
dysuria | (noun) painful or difficult urination | - |
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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 |
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 | - |
eclampsia | (noun) a toxic condition characterized by convulsions and possibly coma during or immediately after pregnancy | - |
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ectasia | (noun) dilatation or distension of a hollow organ | Synonyms: ectasis |
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ectopia | (noun) abnormal position of a part or organ (especially at the time of birth) | - |
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eczema | (noun) generic term for inflammatory conditions of the skin; particularly with vesiculation in the acute stages | - |
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edda | (noun) tropical starchy tuberous root | Synonyms: cocoyam, dasheen, taro, taro root |
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edema | (noun) swelling from excessive accumulation of watery fluid in cells, tissues, or serous cavities | Synonyms: dropsy, hydrops, oedema |
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egomania | (noun) an intense and irresistible love for yourself and concern for your own needs | - |
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eimeria | (noun) parasitic on the digestive epithelium of vertebrates and higher invertebrates | Synonyms: coccidium |
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elsholtzia | (noun) any of various aromatic herbs of the genus Elsholtzia having blue or purple flowers in one-sided spikes | - |
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emmetropia | (noun) (ophthalmology) the normal refractive condition of the eye in which there is clear focus of light on the retina | - |
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emphysema | (noun) an abnormal condition of the lungs marked by decreased respiratory function; associated with smoking or chronic bronchitis or old age | Synonyms: pulmonary emphysema |
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empyema | (noun) a collection of pus in a body cavity (especially in the lung cavity) | - |
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enanthema | (noun) eruption on a mucous membrane (as the inside of the mouth) occurring as a symptom of a disease | Synonyms: enanthem |
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enchilada | (noun) tortilla with meat filling baked in tomato sauce seasoned with chili | - |
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enchondroma | (noun) benign slow-growing tumor of cartilaginous cells at the ends of tubular bones (especially in the hands and feet) | - |
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encyclopaedia | (noun) a reference work (often in several volumes) containing articles on various topics (often arranged in alphabetical order) dealing with the entire range of human knowledge or with some particular specialty | Synonyms: cyclopaedia, cyclopedia, encyclopedia |
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encyclopedia | (noun) a reference work (often in several volumes) containing articles on various topics (often arranged in alphabetical order) dealing with the entire range of human knowledge or with some particular specialty | Synonyms: cyclopaedia, cyclopedia, encyclopaedia |
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endameba | (noun) any ameba of the genus Endamoeba | - |
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