| harpulla | (noun) fast-growing tree of India and East Indies yielding a wood used especially for building | Synonyms: Harpullia cupanioides |
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| harpullia | (noun) any of various tree of the genus Harpullia | - |
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| hawala | (noun) an underground banking system based on trust whereby money can be made available internationally without actually moving it or leaving a record of the transaction | - |
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| hebephrenia | (noun) a form of schizophrenia characterized by severe disintegration of personality including erratic speech and childish mannerisms and bizarre behavior; usually becomes evident during puberty; the most common diagnostic category in mental institutions | Synonyms: disorganized schizophrenia, disorganized type schizophrenia, hebephrenic schizophrenia |
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| hediondilla | (noun) desert shrub of southwestern United States and New Mexico having persistent resinous aromatic foliage and small yellow flowers | Synonyms: coville, creosote bush, Larrea tridentata |
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| hegira | (noun) a journey by a large group to escape from a hostile environment | Synonyms: exodus, hejira |
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| hejira | (noun) a journey by a large group to escape from a hostile environment | Synonyms: exodus, hegira |
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| heliophila | (noun) any of various South African herbs and subshrubs cultivated for long showy racemes of bright blue flowers with white eyes | - |
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| helvella | (noun) any fungus of the genus Helvella having the ascocarps stalked or pleated or often in folds | - |
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| hemangioma | (noun) benign angioma consisting of a mass of blood vessels; some appear as birthmarks | Synonyms: haemangioma |
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| hematochezia | (noun) passage of stools containing blood (as from diverticulosis or colon cancer or peptic ulcer) | Synonyms: haematochezia |
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| hematocolpometra | (noun) accumulation of blood in the vagina and uterus | Synonyms: haematocolpometra |
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| hematocytopenia | (noun) an abnormally low number of red blood cells in the blood | Synonyms: haematocytopenia |
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| hematocyturia | (noun) the presence of red blood cells in the urine | Synonyms: haematocyturia |
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| hematoma | (noun) a localized swelling filled with blood | Synonyms: haematoma |
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| hematuria | (noun) the presence of blood in the urine; often a symptom of urinary tract disease | Synonyms: haematuria |
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| hemeralopia | (noun) inability to see clearly in bright light | Synonyms: day blindness |
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| hemianopia | (noun) blindness in one half of the visual field of one or both eyes | Synonyms: hemianopsia |
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| hemianopsia | (noun) blindness in one half of the visual field of one or both eyes | Synonyms: hemianopia |
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| hemicrania | (noun) a severe recurring vascular headache; occurs more frequently in women than men | Synonyms: megrim, migraine, sick headache |
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| hemiplegia | (noun) paralysis of one side of the body | Synonyms: unilateral paralysis |
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| hemoglobinemia | (noun) presence of excessive hemoglobin in the blood plasma | Synonyms: haemoglobinemia |
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| hemoglobinuria | (noun) presence of hemoglobin in the urine | Synonyms: haemoglobinuria |
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| hemophilia | (noun) congenital tendency to uncontrolled bleeding; usually affects males and is transmitted from mother to son | Synonyms: bleeder's disease, haemophilia |
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| hemostasia | (noun) surgical procedure of stopping the flow of blood (as with a hemostat) | Synonyms: haemostasia, haemostasis, hemostasis |
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| henna | (noun) a reddish brown dye used especially on hair | - |
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| (verb) apply henna to one's hair | - |
| hepatica | (noun) any of several plants of the genus Hepatica having three-lobed leaves and white or pinkish flowers in early spring; of moist and mossy subalpine woodland areas of north temperate regions | Synonyms: liverleaf |
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| (noun) a common liverwort | Synonyms: Marchantia polymorpha |
| hepatocarcinoma | (noun) carcinoma of the liver | Synonyms: hepatocellular carcinoma, hepatoma, malignant hepatoma |
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| hepatoma | (noun) carcinoma of the liver | Synonyms: hepatocarcinoma, hepatocellular carcinoma, malignant hepatoma |
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| hernia | (noun) rupture in smooth muscle tissue through which a bodily structure protrudes | Synonyms: herniation |
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| herpangia | (noun) a viral infection (usually in children) marked by sore throat and fever and papules in the mouth and throat and headache and abdominal pain; usually subsides in a short time | - |
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| hexakosioihexekontahexaphobia | (noun) fear of magic properties of the number 666 | - |
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| holla | (noun) a very loud utterance (like the sound of an animal) | Synonyms: bellow, bellowing, holler, hollering, hollo, holloa, roar, roaring, yowl |
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| holloa | (noun) a very loud utterance (like the sound of an animal) | Synonyms: bellow, bellowing, holla, holler, hollering, hollo, roar, roaring, yowl |
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| holometabola | (noun) insects that undergo complete metamorphosis | Synonyms: metabola |
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| homophobia | (noun) prejudice against (fear or dislike of) homosexual people and homosexuality | - |
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| hoopla | (noun) blatant or sensational promotion | Synonyms: ballyhoo, hype, plug |
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| horchata | (noun) Spanish traditional beverage, made of ground almonds, sesame seeds, rice, barley, tigernuts (chufas), or melon seeds | - |
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| hortensia | (noun) deciduous shrub bearing roundheaded flower clusters opening green and aging to pink or blue | Synonyms: Hydrangea macrophylla hortensis |
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| (noun) very tall branching herb with showy much-doubled yellow flower heads | Synonyms: double gold, golden glow, Rudbeckia laciniata hortensia |
| hosanna | (noun) a cry of praise or adoration (to God) | - |
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| hovea | (noun) any of several attractive evergreen shrubs of Australia grown for their glossy deep green foliage and flowers in rich blues and intense violets | Synonyms: purple pea |
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| hoya | (noun) any plant of the genus Hoya having fleshy leaves and usually nectariferous flowers | - |
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| hryvnia | (noun) the basic unit of money in Ukraine | - |
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| hula | (noun) a Polynesian rain dance performed by a woman | Synonyms: Hawaiian dancing, hula-hula |
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| hyaena | (noun) doglike nocturnal mammal of Africa and southern Asia that feeds chiefly on carrion | Synonyms: hyena |
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| hybridoma | (noun) a hybrid cell resulting from the fusion of a lymphocyte and a tumor cell; used to culture a specific monoclonal antibody | - |
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| hydra | (noun) small tubular solitary freshwater hydrozoan polyp | - |
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| (noun) trouble that cannot be overcome by a single effort because of its many aspects or its persistent and pervasive quality | - |
| hydrangea | (noun) any of various deciduous or evergreen shrubs of the genus Hydrangea | - |
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| hydremia | (noun) blood disorder in which there is excess fluid volume compared with the cell volume of the blood | - |
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| hydrilla | (noun) submersed plant with whorled lanceolate leaves and solitary axillary flowers; Old World plant naturalized in southern United States and clogging Florida's waterways | Synonyms: Hydrilla verticillata |
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| hydrophobia | (noun) an acute viral disease of the nervous system of warm-blooded animals (usually transmitted by the bite of a rabid animal); rabies is fatal if the virus reaches the brain | Synonyms: lyssa, madness, rabies |
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| (noun) a morbid fear of water | - |
| (noun) a symptom of rabies in humans consisting of an aversion to swallowing liquids | - |
| hyena | (noun) doglike nocturnal mammal of Africa and southern Asia that feeds chiefly on carrion | Synonyms: hyaena |
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| hyperacusia | (noun) abnormal acuteness of hearing due to increased irritability of the sensory neural mechanism; characterized by intolerance for ordinary sound levels | Synonyms: auditory hyperesthesia, hyperacusis |
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| hyperaemia | (noun) increased blood in an organ or other body part | Synonyms: hyperemia |
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| hyperbetalipoproteinemia | (noun) a genetic disorder characterized by high levels of beta-lipoproteins and cholesterol; can lead to atherosclerosis at an early age | - |
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| hyperbilirubinemia | (noun) abnormally high amounts of bile pigment (bilirubin) in the blood | - |
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| hyperbola | (noun) an open curve formed by a plane that cuts the base of a right circular cone | - |
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| hypercalcaemia | (noun) the presence of abnormally high levels of calcium in the blood; usually the result of excessive bone resorption in hyperparathyroidism or Paget's disease | Synonyms: hypercalcemia |
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| hypercalcemia | (noun) the presence of abnormally high levels of calcium in the blood; usually the result of excessive bone resorption in hyperparathyroidism or Paget's disease | Synonyms: hypercalcaemia |
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| hypercalcinuria | (noun) the presence of abnormally high levels of calcium in the urine; usually the result of excessive bone resorption in hyperparathyroidism or osteoporosis | Synonyms: hypercalciuria |
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| hypercalciuria | (noun) the presence of abnormally high levels of calcium in the urine; usually the result of excessive bone resorption in hyperparathyroidism or osteoporosis | Synonyms: hypercalcinuria |
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| hypercapnia | (noun) the physical condition of having the presence of an abnormally high level of carbon dioxide in the circulating blood | Synonyms: hypercarbia |
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| hypercarbia | (noun) the physical condition of having the presence of an abnormally high level of carbon dioxide in the circulating blood | Synonyms: hypercapnia |
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| hypercholesteremia | (noun) the presence of an abnormal amount of cholesterol in the cells and plasma of the blood; associated with the risk of atherosclerosis | Synonyms: hypercholesterolemia |
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| hypercholesterolemia | (noun) the presence of an abnormal amount of cholesterol in the cells and plasma of the blood; associated with the risk of atherosclerosis | Synonyms: hypercholesteremia |
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| hyperemia | (noun) increased blood in an organ or other body part | Synonyms: hyperaemia |
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| hyperglycaemia | (noun) abnormally high blood sugar usually associated with diabetes | Synonyms: hyperglycemia |
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| hyperglycemia | (noun) abnormally high blood sugar usually associated with diabetes | Synonyms: hyperglycaemia |
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| hyperkalemia | (noun) higher than normal levels of potassium in the circulating blood; associated with kidney failure or sometimes with the use of diuretic drugs | - |
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| hyperlipaemia | (noun) presence of excess lipids in the blood | Synonyms: hyperlipemia, hyperlipidaemia, hyperlipidemia, hyperlipoidaemia, hyperlipoidemia, lipaemia, lipemia, lipidaemia, lipidemia, lipoidaemia, lipoidemia |
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| hyperlipemia | (noun) presence of excess lipids in the blood | Synonyms: hyperlipaemia, hyperlipidaemia, hyperlipidemia, hyperlipoidaemia, hyperlipoidemia, lipaemia, lipemia, lipidaemia, lipidemia, lipoidaemia, lipoidemia |
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| hyperlipidaemia | (noun) presence of excess lipids in the blood | Synonyms: hyperlipaemia, hyperlipemia, hyperlipidemia, hyperlipoidaemia, hyperlipoidemia, lipaemia, lipemia, lipidaemia, lipidemia, lipoidaemia, lipoidemia |
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| hyperlipidemia | (noun) presence of excess lipids in the blood | Synonyms: hyperlipaemia, hyperlipemia, hyperlipidaemia, hyperlipoidaemia, hyperlipoidemia, lipaemia, lipemia, lipidaemia, lipidemia, lipoidaemia, lipoidemia |
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| hyperlipoidaemia | (noun) presence of excess lipids in the blood | Synonyms: hyperlipaemia, hyperlipemia, hyperlipidaemia, hyperlipidemia, hyperlipoidemia, lipaemia, lipemia, lipidaemia, lipidemia, lipoidaemia, lipoidemia |
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| hyperlipoidemia | (noun) presence of excess lipids in the blood | Synonyms: hyperlipaemia, hyperlipemia, hyperlipidaemia, hyperlipidemia, hyperlipoidaemia, lipaemia, lipemia, lipidaemia, lipidemia, lipoidaemia, lipoidemia |
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| hyperlipoproteinemia | (noun) any of various disorders of lipoprotein and cholesterol metabolism that result in high levels of lipoprotein and cholesterol in the circulating blood | - |
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| hypermedia | (noun) a multimedia system in which related items of information are connected and can be presented together | Synonyms: hypermedia system, interactive multimedia, interactive multimedia system |
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| hypermenorrhea | (noun) abnormally heavy or prolonged menstruation; can be a symptom of uterine tumors and can lead to anemia if prolonged | Synonyms: menorrhagia |
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| hypermetropia | (noun) abnormal condition in which vision for distant objects is better than for near objects | Synonyms: farsightedness, hypermetropy, hyperopia, longsightedness |
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| hypernatremia | (noun) excessive amounts of sodium in the blood; possibly indicating diabetes insipidus | - |
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| hyperopia | (noun) abnormal condition in which vision for distant objects is better than for near objects | Synonyms: farsightedness, hypermetropia, hypermetropy, longsightedness |
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| hyperpiesia | (noun) persistent and pathological high blood pressure for which no specific cause can be found | Synonyms: essential hypertension, hyperpiesis |
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| hyperplasia | (noun) abnormal increase in number of cells | - |
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| hyperpnea | (noun) energetic (deep and rapid) respiration that occurs normally after exercise or abnormally with fever or various disorders | - |
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| hyperpyrexia | (noun) extremely high fever (especially in children) | - |
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| hypersomnia | (noun) an inability to stay awake | - |
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| hyperthermia | (noun) abnormally high body temperature; sometimes induced (as in treating some forms of cancer) | Synonyms: hyperthermy |
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| hypertonia | (noun) (of muscular tissue) the state of being hypertonic | Synonyms: hypertonicity, hypertonus |
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| hypervolaemia | (noun) a blood disorder consisting of an increase in the volume of circulating blood | Synonyms: hypervolemia |
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| hypervolemia | (noun) a blood disorder consisting of an increase in the volume of circulating blood | Synonyms: hypervolaemia |
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| hypesthesia | (noun) impairment of tactile sensitivity; decrease of sensitivity | Synonyms: hypoesthesia |
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| hypha | (noun) any of the threadlike filaments forming the mycelium of a fungus | - |
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| hyphema | (noun) bleeding into the interior chamber of the eye | - |
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| hypnopedia | (noun) teaching during sleep (as by using recordings to teach a foreign language to someone who is asleep) | Synonyms: sleep-learning |
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| hypnophobia | (noun) a morbid fear of falling asleep | - |
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| hypobetalipoproteinemia | (noun) a hereditary disorder characterized by low levels of beta-lipoproteins and lipids and cholesterol | - |
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| hypocalcaemia | (noun) abnormally low level of calcium in the blood; associated with hypoparathyroidism or kidney malfunction or vitamin D deficiency | Synonyms: hypocalcemia |
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| hypocalcemia | (noun) abnormally low level of calcium in the blood; associated with hypoparathyroidism or kidney malfunction or vitamin D deficiency | Synonyms: hypocalcaemia |
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| hypocapnia | (noun) a state in which the level of carbon dioxide in the blood is lower than normal; can result from deep or rapid breathing | Synonyms: acapnia |
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| hypochondria | (noun) chronic and abnormal anxiety about imaginary symptoms and ailments | Synonyms: hypochondriasis |
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