| abscess | (noun) symptom consisting of a localized collection of pus surrounded by inflamed tissue | - |
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| abscissa | (noun) the value of a coordinate on the horizontal axis | - |
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| abscission | (noun) the act of cutting something off | Synonyms: cutting off |
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| (noun) shedding of flowers and leaves and fruit following formation of scar tissue in a plant | - |
| absconder | (noun) a fugitive who runs away and hides to avoid arrest or prosecution | - |
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| abscondment | (noun) the act of running away secretly (as to avoid arrest) | Synonyms: decampment |
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| acquiescence | (noun) agreement with a statement or proposal to do something | Synonyms: assent |
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| (noun) acceptance without protest | - |
| adolescence | (noun) in the state that someone is in between puberty and adulthood | - |
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| (noun) the time period between the beginning of puberty and adulthood | - |
| adolescent | (noun) a juvenile between the onset of puberty and maturity | Synonyms: stripling, teen, teenager |
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| aeschynanthus | (noun) a plant of the genus Aeschynanthus having somewhat red or orange flowers and seeds having distinctive hairs at base and apex | - |
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| affenpinscher | (noun) European breed of small dog resembling a terrier with dark wiry hair and a tufted muzzle | Synonyms: monkey dog, monkey pinscher |
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| airscrew | (noun) a propeller that rotates to push against air | Synonyms: airplane propeller, prop |
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| ambuscade | (noun) the act of concealing yourself and lying in wait to attack by surprise | Synonyms: ambush, lying in wait, trap |
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| angioscope | (noun) a modified microscope used to study capillary vessels | - |
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| arteriolosclerosis | (noun) sclerosis of the arterioles | - |
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| arteriosclerosis | (noun) sclerosis of the arterial walls | Synonyms: arterial sclerosis, coronary-artery disease, hardening of the arteries, induration of the arteries |
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| arthroscope | (noun) a type of endoscope that is inserted into a joint for visual examination | - |
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| arthroscopy | (noun) a minimally invasive operation to repair a damaged joint; the surgeon examines the joint with an arthroscope while making repairs through a small incision | - |
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| ascariasis | (noun) infestation of the human intestine with Ascaris roundworms | - |
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| ascendance | (noun) the state that exists when one person or group has power over another | Synonyms: ascendancy, ascendence, ascendency, control, dominance |
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| ascendancy | (noun) the state that exists when one person or group has power over another | Synonyms: ascendance, ascendence, ascendency, control, dominance |
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| ascendant | (noun) someone from whom you are descended (but usually more remote than a grandparent) | Synonyms: ancestor, antecedent, ascendent, root |
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| (noun) position or state of being dominant or in control | Synonyms: ascendent |
| ascendence | (noun) the state that exists when one person or group has power over another | Synonyms: ascendance, ascendancy, ascendency, control, dominance |
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| ascendency | (noun) the state that exists when one person or group has power over another | Synonyms: ascendance, ascendancy, ascendence, control, dominance |
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| ascendent | (noun) someone from whom you are descended (but usually more remote than a grandparent) | Synonyms: ancestor, antecedent, ascendant, root |
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| (noun) position or state of being dominant or in control | Synonyms: ascendant |
| ascender | (noun) (printing) the part of tall lowercase letters that extends above the other lowercase letters | - |
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| (noun) a lowercase letter that has a part extending above other lowercase letters | - |
| (noun) someone who ascends | - |
| ascending | (noun) the act of changing location in an upward direction | Synonyms: ascension, ascent, rise |
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| ascension | (noun) the act of changing location in an upward direction | Synonyms: ascending, ascent, rise |
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| (noun) a movement upward; rise above the ground | Synonyms: ascent, rise, rising |
| (noun) (astronomy) the rising of a star above the horizon | - |
| ascent | (noun) the act of changing location in an upward direction | Synonyms: ascending, ascension, rise |
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| (noun) a movement upward; rise above the ground | Synonyms: ascension, rise, rising |
| (noun) an upward slope or grade (as in a road) | Synonyms: acclivity, climb, raise, rise, upgrade |
| ascesis | (noun) rigorous self-denial and active self-restraint | Synonyms: asceticism |
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| ascetic | (noun) someone who practices self denial as a spiritual discipline | Synonyms: abstainer |
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| asceticism | (noun) rigorous self-denial and active self-restraint | Synonyms: ascesis |
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| (noun) the trait of great self-denial (especially refraining from worldly pleasures) | Synonyms: austerity, nonindulgence |
| (noun) the doctrine that through renunciation of worldly pleasures it is possible to achieve a high spiritual or intellectual state | - |
| ascidian | (noun) minute sedentary marine invertebrate having a saclike body with siphons through which water enters and leaves | - |
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| ascites | (noun) accumulation of serous fluid in peritoneal cavity | - |
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| asclepiad | (noun) any plant of the family Asclepiadaceae | - |
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| ascocarp | (noun) mature fruiting body of an ascomycetous fungus | - |
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| ascolichen | (noun) a lichen in which the fungus component is an ascomycete | - |
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| ascoma | (noun) an ascocarp having the spore-bearing layer of cells (the hymenium) on a broad disklike receptacle | - |
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| ascomycete | (noun) any fungus of the class Ascomycetes (or subdivision Ascomycota) in which the spores are formed inside an ascus | Synonyms: ascomycetous fungus |
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| ascospore | (noun) sexually produced fungal spore formed within an ascus | - |
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| ascot | (noun) a cravat with wide square ends; secured with an ornamental pin | - |
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| ascription | (noun) assigning to a cause or source | Synonyms: attribution |
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| (noun) assigning some quality or character to a person or thing | Synonyms: attribution |
| ascus | (noun) saclike structure in which ascospores are formed through sexual reproduction of ascomycetes | - |
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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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| auriscope | (noun) medical instrument consisting of a magnifying lens and light; used for examining the external ear (the auditory meatus and especially the tympanic membrane) | Synonyms: auroscope, otoscope |
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| auroscope | (noun) medical instrument consisting of a magnifying lens and light; used for examining the external ear (the auditory meatus and especially the tympanic membrane) | Synonyms: auriscope, otoscope |
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| auscultation | (noun) listening to sounds within the body (usually with a stethoscope) | - |
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| autofluorescence | (noun) self-induced fluorescence | - |
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| backscratcher | (noun) a long-handled scratcher for scratching your back | - |
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| (noun) someone who is willing to trade favors or services for mutual advantage | - |
| bagascosis | (noun) alveolitis caused by inhaling bagasse (sugarcane dust) | Synonyms: bagassosis |
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| barbasco | (noun) West Indian shrub or small tree having leathery saponaceous leaves and extremely hard wood | Synonyms: Jacquinia keyensis, joewood |
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| bascule | (noun) a structure or device in which one end is counterbalanced by the other (on the principle of the seesaw) | - |
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| bathyscape | (noun) navigable deep diving vessel for underwater exploration | Synonyms: bathyscaph, bathyscaphe |
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| bathyscaph | (noun) navigable deep diving vessel for underwater exploration | Synonyms: bathyscape, bathyscaphe |
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| bathyscaphe | (noun) navigable deep diving vessel for underwater exploration | Synonyms: bathyscape, bathyscaph |
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| bioluminescence | (noun) luminescence produced by physiological processes (as in the firefly) | - |
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| bioscience | (noun) any of the branches of natural science dealing with the structure and behavior of living organisms | Synonyms: life science |
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| bioscope | (noun) a kind of early movie projector | - |
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| (noun) a South African movie theater | - |
| biscuit | (noun) small round bread leavened with baking-powder or soda | - |
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| (noun) any of various small flat sweet cakes | Synonyms: cookie, cooky |
| blastodisc | (noun) a layer of cells on the inside of the blastula | Synonyms: blastoderm, germinal area, germinal disc |
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| borsch | (noun) a Russian or Polish soup usually containing beet juice as a foundation | Synonyms: borscht, borsh, borshch, borsht, bortsch |
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| borscht | (noun) a Russian or Polish soup usually containing beet juice as a foundation | Synonyms: borsch, borsh, borshch, borsht, bortsch |
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| bortsch | (noun) a Russian or Polish soup usually containing beet juice as a foundation | Synonyms: borsch, borscht, borsh, borshch, borsht |
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| bosc | (noun) greenish-yellow pear | - |
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| bronchoscope | (noun) a slender tubular instrument used to examine the bronchial tubes | - |
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| butterscotch | (noun) a hard brittle candy made with butter and brown sugar | - |
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| cascabel | (noun) a bell attached to a sleigh, or to the harness of a horse that is pulling a sleigh | Synonyms: sleigh bell |
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| cascade | (noun) a sudden downpour (as of tears or sparks etc) likened to a rain shower | Synonyms: shower |
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| (noun) a succession of stages or operations or processes or units | - |
| (noun) a small waterfall or series of small waterfalls | - |
| cascara | (noun) dried bark of the cascara buckthorn used as a laxative | Synonyms: cascara sagrada, chittam bark, chittem bark |
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| cascarilla | (noun) West Indian shrub with aromatic bark | Synonyms: Croton eluteria |
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| celioscopy | (noun) endoscopic examination of the abdomen through the abdominal wall | - |
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| cheiloschisis | (noun) a congenital cleft in the middle of the upper lip | Synonyms: cleft lip, harelip |
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| cheiloscopy | (noun) a forensic investigation technique that deals with identification of humans based on lip traces. | - |
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| chemiluminescence | (noun) luminescence resulting from a chemical reaction as the oxidation of luciferin in fireflies | - |
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| chiaroscuro | (noun) a monochrome picture made by using several different shades of the same color | - |
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| chronoscope | (noun) an instrument for accurate measurements of small intervals of time | - |
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| circumscription | (noun) the act of circumscribing | - |
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| cisco | (noun) important food fish of cold deep lakes of North America | Synonyms: Coregonus artedi, lake herring |
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| (noun) cold-water fish caught in Lake Superior and northward | Synonyms: lake herring |
| cityscape | (noun) painting depicting a city or urban area | - |
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| (noun) a viewpoint toward a city or other heavily populated area | - |
| coalescence | (noun) the union of diverse things into one body or form or group; the growing together of parts | Synonyms: coalescency, coalition, concretion, conglutination |
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| coalescency | (noun) the union of diverse things into one body or form or group; the growing together of parts | Synonyms: coalescence, coalition, concretion, conglutination |
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| cockscomb | (noun) the fleshy red crest on the head of the domestic fowl and other gallinaceous birds | Synonyms: comb, coxcomb |
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| (noun) a cap worn by court jesters; adorned with a strip of red | Synonyms: coxcomb |
| (noun) a conceited dandy who is overly impressed by his own accomplishments | Synonyms: coxcomb |
| (noun) garden annual with featherlike spikes of red or yellow flowers | Synonyms: Celosia argentea cristata, Celosia cristata, common cockscomb |
| cognoscente | (noun) an expert able to appreciate a field; especially in the fine arts | Synonyms: connoisseur |
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| colonoscope | (noun) an elongated fiberoptic endoscope for examining the entire colon from cecum to rectum | - |
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| colonoscopy | (noun) visual examination of the colon (with a colonoscope) from the cecum to the rectum; requires sedation | - |
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| colposcope | (noun) An endoscopic instrument that magnifies the epithelia of the vagina and cervix in vivo to allow direct observation and study of these tissues. | Synonyms: vaginoscope |
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| concupiscence | (noun) a desire for sexual intimacy | Synonyms: eros, physical attraction, sexual desire |
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| condescendingness | (noun) affability to your inferiors and temporary disregard for differences of position or rank | Synonyms: condescension |
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| condescension | (noun) the trait of displaying arrogance by patronizing those considered inferior | Synonyms: disdainfulness, superciliousness |
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| (noun) affability to your inferiors and temporary disregard for differences of position or rank | Synonyms: condescendingness |
| (noun) a communication that indicates lack of respect by patronizing the recipient | Synonyms: disdain, patronage |
| confiscation | (noun) seizure by the government | Synonyms: arrogation |
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| conscience | (noun) conformity to one's own sense of right conduct | - |
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| (noun) a feeling of shame when you do something immoral | - |
| (noun) motivation deriving logically from ethical or moral principles that govern a person's thoughts and actions | Synonyms: moral sense, scruples, sense of right and wrong |
| conscientiousness | (noun) the quality of being in accord with the dictates of conscience | - |
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| (noun) the trait of being painstaking and careful | Synonyms: painstakingness |
| consciousness | (noun) an alert cognitive state in which you are aware of yourself and your situation | - |
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| (noun) having knowledge of | Synonyms: awareness, cognisance, cognizance, knowingness |
| conscript | (noun) someone who is drafted into military service | Synonyms: draftee, inductee |
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| conscription | (noun) compulsory military service | Synonyms: draft, muster, selective service |
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| convalescence | (noun) gradual healing (through rest) after sickness or injury | Synonyms: recovery, recuperation |
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| convalescent | (noun) a person who is recovering from illness | - |
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| corkscrew | (noun) a bottle opener that pulls corks | Synonyms: bottle screw |
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| corpuscle | (noun) either of two types of cells (erythrocytes and leukocytes) and sometimes including platelets | Synonyms: blood cell, blood corpuscle |
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| (noun) (nontechnical usage) a tiny piece of anything | Synonyms: atom, molecule, mote, particle, speck |
| coruscation | (noun) a sudden or striking display of brilliance | - |
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| (noun) the occurrence of a small flash or spark | Synonyms: glitter, sparkle |
| coscoroba | (noun) large white South American bird intermediate in some respects between ducks and swans | - |
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