| arthrocentesis | (noun) removal of fluid from a joint by centesis | - |
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| arthrodesis | (noun) the surgical fixation of a joint which is intended to result in bone fusion | - |
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| asbestosis | (noun) lung disease caused by inhaling asbestos particles | - |
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| ascariasis | (noun) infestation of the human intestine with Ascaris roundworms | - |
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| ascesis | (noun) rigorous self-denial and active self-restraint | Synonyms: asceticism |
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| asepsis | (noun) the process of inhibiting the growth and multiplication of microorganisms | Synonyms: antisepsis |
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| (noun) (of non-living objects) the state of being free of pathogenic organisms | Synonyms: antisepsis, sterileness, sterility |
| aspergillosis | (noun) an opportunistic infection by a fungus of the genus Aspergillus; characterized by inflammation and lesions of the ear and other organs | - |
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| (noun) disease especially in agricultural workers caused by inhalation of Aspergillus spores causing lumps in skin and ears and respiratory organs | - |
| (noun) severe respiratory disease of birds that takes the form of an acute rapidly fatal pneumonia in young chickens and turkeys | Synonyms: brooder pneumonia |
| astereognosis | (noun) a loss of the ability to recognize objects by handling them | Synonyms: tactile agnosia |
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| ataraxis | (noun) the absence of mental stress or anxiety | Synonyms: heartsease, peace, peace of mind, peacefulness, repose, serenity |
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| atelectasis | (noun) collapse of an expanded lung (especially in infants); also failure of pulmonary alveoli to expand at birth | - |
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| ateleiosis | (noun) a form of infantilism characterized by physical underdevelopment but normal intelligence | Synonyms: ateliosis |
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| ateliosis | (noun) a form of infantilism characterized by physical underdevelopment but normal intelligence | Synonyms: ateleiosis |
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| atherogenesis | (noun) the formation of atheromas on the walls of the arteries as in atherosclerosis | - |
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| atherosclerosis | (noun) a stage of arteriosclerosis involving fatty deposits (atheromas) inside the arterial walls, thus narrowing the arteries | Synonyms: coronary artery disease |
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| athetosis | (noun) a continuous succession of slow, writhing, involuntary movements of the hands and feet and other body parts | - |
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| atopognosis | (noun) absence or loss of topognosia; inability to locate correctly a point of touch | Synonyms: atopognosia |
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| autocatalysis | (noun) catalysis in which the catalyst is one of the products of the reaction | - |
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| autogenesis | (noun) a hypothetical organic phenomenon by which living organisms are created from nonliving matter | Synonyms: abiogenesis, autogeny, spontaneous generation |
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| autolysis | (noun) lysis of plant or animal tissue by an internal process | Synonyms: self-digestion |
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| auxesis | (noun) growth from increase in cell size without cell division | - |
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| avitaminosis | (noun) any of several diseases caused by deficiency of one or more vitamins | Synonyms: hypovitaminosis |
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| avoirdupois | (noun) excess bodily weight | Synonyms: blubber, fat, fatness |
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| (noun) a system of weights based on the 16-ounce pound (or 7,000 grains) | Synonyms: avoirdupois weight |
| axis | (noun) the center around which something rotates | Synonyms: axis of rotation |
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| (noun) the 2nd cervical vertebra; serves as a pivot for turning the head | Synonyms: axis vertebra |
| (noun) a straight line through a body or figure that satisfies certain conditions | - |
| (noun) a group of countries in special alliance | Synonyms: bloc |
| (noun) the main stem or central part about which plant organs or plant parts such as branches are arranged | - |
| bacteriolysis | (noun) dissolution or destruction of bacteria | - |
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| bacteriostasis | (noun) inhibition of the growth of bacteria | - |
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| bagascosis | (noun) alveolitis caused by inhaling bagasse (sugarcane dust) | Synonyms: bagassosis |
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| bagassosis | (noun) alveolitis caused by inhaling bagasse (sugarcane dust) | Synonyms: bagascosis |
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| bakshis | (noun) a relatively small amount of money given for services rendered (as by a waiter) | Synonyms: backsheesh, baksheesh, bakshish, gratuity, pourboire, tip |
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| balanitis | (noun) inflammation of the head of the penis | - |
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| balanoposthitis | (noun) inflammation of both the head of the penis and the foreskin | - |
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| basis | (noun) the fundamental assumptions from which something is begun or developed or calculated or explained | Synonyms: base, cornerstone, foundation, fundament, groundwork |
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| (noun) a relation that provides the foundation for something | Synonyms: footing, ground |
| (noun) the most important or necessary part of something | Synonyms: base |
| bilharziasis | (noun) an infestation with or a resulting infection caused by a parasite of the genus Schistosoma; common in the tropics and Far East; symptoms depend on the part of the body infected | Synonyms: bilharzia, schistosomiasis |
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| biogenesis | (noun) the production of living organisms from other living organisms | Synonyms: biogeny |
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| (noun) production of a chemical compound by a living organism | Synonyms: biosynthesis |
| biosynthesis | (noun) production of a chemical compound by a living organism | Synonyms: biogenesis |
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| blastogenesis | (noun) theory that inherited characteristics are transmitted by germ plasm | - |
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| (noun) asexual reproduction by budding | - |
| blastomycosis | (noun) any of several infections of the skin or mucous membrane caused by Blastomyces | - |
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| blepharitis | (noun) inflammation of the eyelids characterized by redness and swelling and dried crusts | - |
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| bourgeois | (adjective) (according to Marxist thought) being of the property-owning class and exploitive of the working class | - |
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| (adjective) belonging to the middle class | - |
| (adjective) conforming to the standards and conventions of the middle class | Synonyms: conservative, materialistic |
| (noun) a member of the middle class | Synonyms: burgher |
| (noun) a capitalist who engages in industrial commercial enterprise | Synonyms: businessperson |
| bronchiolitis | (noun) inflammation of the membranes lining the bronchioles | - |
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| bronchitis | (noun) inflammation of the membranes lining the bronchial tubes | - |
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| brucellosis | (noun) an infectious disease of domestic animals often resulting in spontaneous abortion; transmittable to human beings | Synonyms: Bang's disease, contagious abortion |
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| (noun) infectious bacterial disease of human beings transmitted by contact with infected animals or infected meat or milk products; characterized by fever and headache | Synonyms: Gibraltar fever, Malta fever, Mediterranean fever, Rock fever, undulant fever |
| bursitis | (noun) inflammation of a bursa; frequently in the shoulder | - |
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| cacogenesis | (noun) inability to produce hybrids that are both viable and fertile | - |
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| caenogenesis | (noun) introduction during embryonic development of characters or structure not present in the earlier evolutionary history of the strain or species (such as the addition of the placenta in mammalian evolution) | Synonyms: cainogenesis, cenogenesis, kainogenesis, kenogenesis |
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| cainogenesis | (noun) introduction during embryonic development of characters or structure not present in the earlier evolutionary history of the strain or species (such as the addition of the placenta in mammalian evolution) | Synonyms: caenogenesis, cenogenesis, kainogenesis, kenogenesis |
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| calliopsis | (noun) North American annual widely cultivated for its yellow flowers with purple-red to brownish centers; in some classifications placed in a subgenus Calliopsis | Synonyms: Coreopsis tinctoria |
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| candidiasis | (noun) an infection caused by fungi of the genus Monilia or Candida (especially Candida albicans) | Synonyms: monilia disease, moniliasis |
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| cannabis | (noun) the most commonly used illicit drug; considered a soft drug, it consists of the dried leaves of the hemp plant; smoked or chewed for euphoric effect | Synonyms: ganja, marihuana, marijuana |
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| (noun) any plant of the genus Cannabis; a coarse bushy annual with palmate leaves and clusters of small green flowers; yields tough fibers and narcotic drugs | Synonyms: hemp |
| carditis | (noun) inflammation of the heart | - |
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| caryopsis | (noun) dry seed-like fruit produced by the cereal grasses: e.g. wheat, barley, Indian corn | Synonyms: grain |
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| catabiosis | (noun) normal aging of cells | - |
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| catachresis | (noun) strained or paradoxical use of words either in error (as `blatant' to mean `flagrant') or deliberately (as in a mixed metaphor: `blind mouths') | - |
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| catalexis | (noun) the absence of a syllable in the last foot of a line or verse | - |
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| catalysis | (noun) acceleration of a chemical reaction induced by the presence of material that is chemically unchanged at the end of the reaction | Synonyms: contact action |
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| cataphoresis | (noun) the motion of charged particles in a colloid under the influence of an electric field; particles with a positive charge go to the cathode and negative to the anode | Synonyms: dielectrolysis, electrophoresis, ionophoresis |
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| catechesis | (noun) oral religious instruction (as before baptism or confirmation) | - |
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| catharsis | (noun) (psychoanalysis) purging of emotional tensions | Synonyms: abreaction, katharsis |
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| (noun) purging the body by the use of a cathartic to stimulate evacuation of the bowels | Synonyms: katharsis, purgation |
| cathexis | (noun) (psychoanalysis) the libidinal energy invested in some idea or person or object | Synonyms: charge |
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| celiocentesis | (noun) removal of fluid from the abdomen by centesis | - |
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| cellulitis | (noun) an inflammation of body tissue (especially that below the skin) characterized by fever and swelling and redness and pain | - |
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| cenogenesis | (noun) introduction during embryonic development of characters or structure not present in the earlier evolutionary history of the strain or species (such as the addition of the placenta in mammalian evolution) | Synonyms: caenogenesis, cainogenesis, kainogenesis, kenogenesis |
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| centesis | (noun) (surgery) the act of puncturing a body cavity or organ with a hollow needle in order to draw out fluid | - |
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| cephalitis | (noun) inflammation of the brain usually caused by a virus; symptoms include headache and neck pain and drowsiness and nausea and fever (`phrenitis' is no longer in scientific use) | Synonyms: encephalitis, phrenitis |
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| cerebromeningitis | (noun) inflammation of the brain and spinal cord and their meninges | Synonyms: encephalomeningitis, meningoencephalitis |
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| cervicitis | (noun) inflammation of the uterine cervix | - |
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| chaenactis | (noun) any of several United States plants having long stalks of funnel-shaped white or yellow flowers | - |
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| challis | (noun) a soft lightweight fabric (usually printed) | - |
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| chamois | (noun) hoofed mammal of mountains of Eurasia having upright horns with backward-hooked tips | Synonyms: Rupicapra rupicapra |
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| (noun) a soft suede leather formerly from the skin of the chamois antelope but now from sheepskin | Synonyms: chammy, chammy leather, chamois leather, shammy, shammy leather |
| chassis | (noun) the skeleton of a motor vehicle consisting of a steel frame supported on springs that holds the body and motor | - |
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| (noun) a metal mounting for the circuit components of an electronic device | - |
| (noun) alternative names for the body of a human being | Synonyms: anatomy, bod, build, figure, flesh, form, frame, human body, material body, physical body, physique, shape, soma |
| cheilitis | (noun) inflammation and cracking of the skin of the lips | - |
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| cheiloschisis | (noun) a congenital cleft in the middle of the upper lip | Synonyms: cleft lip, harelip |
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| cheilosis | (noun) a disorder of the lips marked by scaling and fissures at the corners of the mouth; caused by a deficiency of riboflavin | Synonyms: perleche |
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| chemosis | (noun) edema of the mucous membrane of the eyeball and eyelid lining | - |
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| chemosynthesis | (noun) synthesis of carbohydrate from carbon dioxide and water; limited to certain bacteria and fungi | - |
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| chemotaxis | (noun) movement by a cell or organism in reaction to a chemical stimulus | - |
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| chlorosis | (noun) iron deficiency anemia in young women; characterized by weakness and menstrual disturbances and a green color to the skin | Synonyms: greensickness |
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| cholangitis | (noun) inflammation of the bile ducts | - |
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| cholecystitis | (noun) inflammation of the gall bladder | - |
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| cholelithiasis | (noun) the presence of gallstones in the gallbladder | - |
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| cholestasis | (noun) a condition in which little or no bile is secreted or the flow of bile into the digestive tract is obstructed | Synonyms: acholia |
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| chorditis | (noun) inflammation of the vocal cords | - |
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| (noun) inflammation of the spermatic cord or vocal cords or vocal folds | - |
| chorioallantois | (noun) the very vascular fetal membrane composed of the fused chorion and adjacent wall of the allantois | Synonyms: chorioallantoic membrane |
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| choriomeningitis | (noun) a cerebral meningitis with cellular infiltration of the meninges | - |
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| chorioretinitis | (noun) inflammation of the choroid layer behind the retina | - |
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| chromoblastomycosis | (noun) a fungal infection characterized by itchy warty nodules on the skin | - |
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| chrysalis | (noun) pupa of a moth or butterfly enclosed in a cocoon | - |
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| cirrhosis | (noun) a chronic disease interfering with the normal functioning of the liver; the major cause is chronic alcoholism | Synonyms: cirrhosis of the liver |
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| clematis | (noun) any of various ornamental climbing plants of the genus Clematis usually having showy flowers | - |
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| clevis | (noun) a coupler shaped like the letter U with holes through each end so a bolt or pin can pass through the holes to complete the coupling; used to attach a drawbar to a plow or wagon or trailer etc. | - |
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| clitoris | (noun) a female sexual organ homologous to the penis | Synonyms: button, clit |
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| coccidioidomycosis | (noun) an infection of the lungs and skin characterized by excessive sputum and nodules | Synonyms: coccidiomycosis, desert rheumatism, valley fever |
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| coccidiomycosis | (noun) an infection of the lungs and skin characterized by excessive sputum and nodules | Synonyms: coccidioidomycosis, desert rheumatism, valley fever |
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| coccidiosis | (noun) (veterinary medicine) infestation with coccidia | - |
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| coelophysis | (noun) one of the oldest known dinosaurs; late Triassic; cannibalistic | - |
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| colitis | (noun) inflammation of the colon | Synonyms: inflammatory bowel disease |
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| colpitis | (noun) inflammation of the vagina | - |
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| colpocystitis | (noun) inflammation of the vagina and bladder | - |
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| colpoxerosis | (noun) a condition in which the vagina is unusually dry | - |
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| conjunctivitis | (noun) inflammation of the conjunctiva of the eye | Synonyms: pinkeye |
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| corditis | (noun) inflammation of the spermatic cord, accompanied by pain in the testis, generally caused by an infection originating in the urethra or by a tumor, hydrocele, or varicocele | - |
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