| abstinence | (noun) act or practice of refraining from indulging an appetite | - |
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| (noun) the trait of abstaining (especially from alcohol) | Synonyms: abstention |
| abstinent | (noun) a person who refrains from drinking intoxicating beverages | Synonyms: abstainer, nondrinker |
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| acoustic | (noun) a remedy for hearing loss or deafness | - |
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| acoustician | (noun) a physicist who specializes in acoustics | - |
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| acousticophobia | (noun) a morbid fear of sounds including your own voice | Synonyms: phonophobia |
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| acoustics | (noun) the study of the physical properties of sound | - |
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| acrostic | (noun) a puzzle where you fill a square grid with words reading the same down as across | Synonyms: word square |
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| (noun) verse in which certain letters such as the first in each line form a word or message | - |
| aestivation | (noun) (botany) the arrangement of sepals and petals in a flower bud before it opens | Synonyms: estivation |
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| (noun) (zoology) cessation or slowing of activity during the summer; especially slowing of metabolism in some animals during a hot or dry period | Synonyms: estivation |
| agnostic | (noun) a person who claims that they cannot have true knowledge about the existence of God (but does not deny that God might exist) | - |
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| (noun) someone who is doubtful or noncommittal about something | Synonyms: doubter |
| agnosticism | (noun) the disbelief in any claims of ultimate knowledge | Synonyms: scepticism, skepticism |
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| (noun) a religious orientation of doubt; a denial of ultimate knowledge of the existence of God | - |
| amastia | (noun) absence of the mammary glands (either through surgery or developmental defect) | - |
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| anastigmat | (noun) compound lens or lens system designed to be free of astigmatism and able to form approximately point images | - |
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| antineoplastic | (noun) any of several drugs that control or kill neoplastic cells; used in chemotherapy to kill cancer cells; all have unpleasant side effects that may include nausea and vomiting and hair loss and suppression of bone marrow function | Synonyms: antineoplastic drug, cancer drug |
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| armistice | (noun) a state of peace agreed to between opponents so they can discuss peace terms | Synonyms: cease-fire, truce |
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| astigmatism | (noun) (optics) defect in an optical system in which light rays from a single point fail to converge in a single focal point | Synonyms: astigmia |
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| (noun) (ophthalmology) impaired eyesight resulting usually from irregular conformation of the cornea; common in nearsighted people | Synonyms: astigmia |
| astigmia | (noun) (optics) defect in an optical system in which light rays from a single point fail to converge in a single focal point | Synonyms: astigmatism |
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| (noun) (ophthalmology) impaired eyesight resulting usually from irregular conformation of the cornea; common in nearsighted people | Synonyms: astigmatism |
| astilbe | (noun) any plant of the genus Astilbe having compound leaves and showy panicles of tiny colorful flowers | - |
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| autosuggestion | (noun) a system for self-improvement developed by Emile Coue which was popular in the 1920s and 1930s | Synonyms: auto-suggestion, self-suggestion |
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| backstitch | (noun) an overlapping stitch made by starting the next stitch at the middle of the preceding one | - |
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| ballistics | (noun) the science of flight dynamics | - |
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| (noun) the trajectory of an object in free flight | Synonyms: ballistic trajectory |
| bastille | (noun) a jail or prison (especially one that is run in a tyrannical manner) | - |
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| bastinado | (noun) a form of torture in which the soles of the feet are beaten with whips or cudgels | Synonyms: falanga |
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| (noun) a cudgel used to give someone a beating on the soles of the feet | - |
| basting | (noun) moistening a roast as it is cooking | - |
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| (noun) a loose temporary sewing stitch to hold layers of fabric together | Synonyms: baste, basting stitch, tacking |
| bastion | (noun) projecting part of a rampart or other fortification | - |
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| (noun) a stronghold into which people could go for shelter during a battle | Synonyms: citadel |
| (noun) a group that defends a principle | - |
| bestiality | (noun) sexual activity between a person and an animal | Synonyms: sodomy, zooerastia, zooerasty |
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| (noun) the stupid brutal quality of a beast | - |
| bestiary | (noun) a medieval book (usually illustrated) with allegorical and amusing descriptions of real and fabled animals | - |
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| billystick | (noun) a short stout club used primarily by policemen | Synonyms: baton, billy, billy club, nightstick, truncheon |
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| biostatistics | (noun) a branch of biology that studies biological phenomena and observations by means of statistical analysis | Synonyms: biometrics, biometry |
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| birdnesting | (noun) hunting for birds' nests to get the eggs | - |
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| bitumastic | (noun) a protective coating of asphalt and filter used on structural metals that are exposed to weathering | - |
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| bloodthirstiness | (noun) a disposition to shed blood | Synonyms: bloodiness |
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| boasting | (noun) speaking of yourself in superlatives | Synonyms: boast, jactitation, self-praise |
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| breadstick | (noun) a crisp stick-shaped roll; often served with soup | Synonyms: bread-stick |
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| broadcasting | (noun) taking part in a radio or tv program | - |
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| (noun) a medium that disseminates via telecommunications | Synonyms: broadcast medium |
| broomstick | (noun) the handle of a broom | Synonyms: broom handle |
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| bustier | (noun) a close-fitting and strapless top without sleeves that is worn by women either as lingerie or for evening dress | - |
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| candlestick | (noun) a holder with sockets for candles | Synonyms: candle holder |
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| castigation | (noun) verbal punishment | Synonyms: chastisement |
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| (noun) a severe scolding | Synonyms: bawling out, chewing out, dressing down, earful, going-over, upbraiding |
| casting | (noun) the act of creating something by casting it in a mold | Synonyms: molding |
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| (noun) the act of throwing a fishing line out over the water by means of a rod and reel | Synonyms: cast |
| (noun) the choice of actors to play particular roles in a play or movie | - |
| (noun) object formed by a mold | Synonyms: cast |
| catacaustic | (noun) a caustic curve formed by light reflecting from a curved surface. | - |
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| caustic | (noun) the envelope of light rays reflected or refracted by a curved surface or object | - |
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| (noun) any chemical substance that burns or destroys living tissue | - |
| celestite | (noun) a mineral consisting of strontium sulphate | - |
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| ceroplastics | (noun) the art of modeling in wax. | - |
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| characteristic | (noun) a distinguishing quality; a feature that can be used to identify something | - |
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| (noun) any measurable property of a device measured under closely specified conditions | Synonyms: device characteristic |
| (noun) a prominent attribute or aspect of something | Synonyms: feature |
| (noun) the integer part (positive or negative) of the representation of a logarithm; in the expression log 643 = 2.808 the characteristic is 2 | - |
| characteristicness | (noun) The quality or state of being a distinguishing feature of a person or thing. | - |
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| chastisement | (noun) verbal punishment | Synonyms: castigation |
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| (noun) a rebuke for making a mistake | Synonyms: chastening, correction |
| chastity | (noun) abstaining from sexual relations (as because of religious vows) | Synonyms: celibacy, sexual abstention |
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| (noun) morality with respect to sexual relations | Synonyms: sexual morality, virtue |
| cholecystitis | (noun) inflammation of the gall bladder | - |
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| chopstick | (noun) one of a pair of slender sticks used as oriental tableware to eat food with | - |
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| cladistics | (noun) a taxonomic system of classifying species based on the branching patterns of cladograms that are built to infer phylogenetic relations | Synonyms: cladistic analysis |
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| colpocystitis | (noun) inflammation of the vagina and bladder | - |
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| combustibility | (noun) the quality of being capable of igniting and burning | Synonyms: burnability, combustibleness |
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| combustible | (noun) a substance that can be burned to provide heat or power | Synonyms: combustible material |
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| combustibleness | (noun) the quality of being capable of igniting and burning | Synonyms: burnability, combustibility |
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| combustion | (noun) the act of burning something | Synonyms: burning |
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| (noun) a process in which a substance reacts with oxygen to give heat and light | Synonyms: burning |
| (noun) a state of violent disturbance and excitement | - |
| comestible | (noun) any substance that can be used as food | Synonyms: eatable, edible, pabulum, victual, victuals |
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| congestion | (noun) excessive accumulation of blood or other fluid in a body part | - |
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| (noun) excessive crowding | Synonyms: over-crowding |
| constipation | (noun) the act of making something futile and useless (as by routine) | Synonyms: deadening, impairment, stultification |
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| (noun) irregular and infrequent or difficult evacuation of the bowels; can be a symptom of intestinal obstruction or diverticulitis | Synonyms: irregularity |
| constituency | (noun) the body of voters who elect a representative for their area | - |
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| constituent | (noun) an artifact that is one of the individual parts of which a composite entity is made up; especially a part that can be separated from or attached to a system | Synonyms: component, element |
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| (noun) an abstract part of something | Synonyms: component, element, factor, ingredient |
| (noun) (grammar) a word or phrase or clause forming part of a larger grammatical construction | Synonyms: grammatical constituent |
| (noun) a member of a constituency; a citizen who is represented in a government by officials for whom he or she votes | - |
| (noun) something determined in relation to something that includes it | Synonyms: component, component part, part, portion |
| constitution | (noun) the act of forming or establishing something | Synonyms: establishment, formation, organisation, organization |
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| (noun) the way in which someone or something is composed | Synonyms: composition, make-up, makeup, physical composition |
| (noun) law determining the fundamental political principles of a government | Synonyms: fundamental law, organic law |
| constitutional | (noun) a regular walk taken as a form of exercise | - |
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| constitutionalism | (noun) advocacy of a system of government according to constitutional principles | - |
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| (noun) a constitutional system of government (usually with a written constitution) | - |
| constitutionalist | (noun) an advocate of constitutional government | - |
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| contradistinction | (noun) a distinction drawn on the basis of contrast | - |
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| costia | (noun) a flagellate that is the cause of the frequently fatal fish disease costiasis | Synonyms: Costia necatrix |
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| costiasis | (noun) a fatal disease of freshwater fish caused by a flagellated protozoan invading the skin | - |
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| costing | (noun) cost accounting | - |
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| cothromboplastin | (noun) a coagulation factor formed in the kidney under the influence of vitamin K | Synonyms: factor VII, proconvertin, stable factor |
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| crosstie | (noun) one of the cross braces that support the rails on a railway track | Synonyms: railroad tie, sleeper, tie |
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| cystine | (noun) a crystalline amino acid found in proteins (especially keratin); discovered in bladder stones | - |
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| cystitis | (noun) inflammation of the urinary bladder and ureters | - |
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| dacryocystitis | (noun) inflammation of the lacrimal sac causing obstruction of the tube draining tears into the nose | - |
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| destination | (noun) the ultimate goal for which something is done | Synonyms: terminus |
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| (noun) written directions for finding some location; written on letters or packages that are to be delivered to that location | Synonyms: address, name and address |
| (noun) the place designated as the end (as of a race or journey) | Synonyms: finish, goal |
| destiny | (noun) an event (or a course of events) that will inevitably happen in the future | Synonyms: fate |
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| (noun) the ultimate agency regarded as predetermining the course of events | Synonyms: fate |
| (noun) your overall circumstances or condition in life (including everything that happens to you) | Synonyms: circumstances, fate, fortune, lot, luck, portion |
| destitution | (noun) a state without friends or money or prospects | - |
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| diagnostician | (noun) a doctor who specializes in medical diagnosis | Synonyms: pathologist |
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| diagnostics | (noun) the branch of medical science dealing with the classification of disease | Synonyms: nosology |
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| diethylstilbesterol | (noun) synthetic nonsteroid with the properties of estrogen; formerly used to treat menstrual problems but was found to be associated with vaginal cancers in the daughters of women so treated during pregnancy | Synonyms: DES, stilbesterol |
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| diethylstilbestrol | (noun) a potent estrogen used in medicine and in feed for livestock and poultry | Synonyms: DES, diethylstilboestrol, stilbestrol, stilboestrol |
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| diethylstilboestrol | (noun) a potent estrogen used in medicine and in feed for livestock and poultry | Synonyms: DES, diethylstilbestrol, stilbestrol, stilboestrol |
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| digestibility | (noun) the property of being easy to digest | Synonyms: digestibleness |
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| digestibleness | (noun) the property of being easy to digest | Synonyms: digestibility |
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| digestion | (noun) learning and coming to understand ideas and information | - |
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| (noun) the organic process by which food is converted into substances that can be absorbed into the body | - |
| (noun) the process of decomposing organic matter (as in sewage) by bacteria or by chemical action or heat | - |
| digestive | (noun) any substance that promotes digestion | - |
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| dipstick | (noun) a graduated rod dipped into a container to indicate the fluid level | - |
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| disgustingness | (noun) extreme unpalatability to the mouth | Synonyms: distastefulness, nauseatingness, sickeningness, unsavoriness |
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| (noun) the property of being extremely unacceptable to the mind | Synonyms: unsavoriness |
| distich | (noun) two items of the same kind | Synonyms: brace, couple, couplet, duad, duet, duo, dyad, pair, span, twain, twosome, yoke |
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| distillate | (noun) a purified liquid produced by condensation from a vapor during distilling; the product of distilling | Synonyms: distillation |
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| distillation | (noun) the process of purifying a liquid by boiling it and condensing its vapors | Synonyms: distillment |
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| (noun) a purified liquid produced by condensation from a vapor during distilling; the product of distilling | Synonyms: distillate |
| distiller | (noun) someone who distills alcoholic liquors | - |
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| distillery | (noun) a plant and works where alcoholic drinks are made by distillation | Synonyms: still |
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| distillment | (noun) the process of purifying a liquid by boiling it and condensing its vapors | Synonyms: distillation |
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| distinction | (noun) a distinguishing difference between similar things or people | - |
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| (noun) a discrimination between things as different and distinct on the basis of their characteristics or attributes | Synonyms: differentiation |
| (noun) an honor awarded to someone in recognition of achievement or superiority | - |
| (noun) high status importance owing to marked superiority | Synonyms: eminence, note, preeminence |
| distinctiveness | (noun) utter dissimilarity | Synonyms: disparateness |
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| (noun) a distinguishing trait | Synonyms: peculiarity, speciality, specialness, specialty |
| distinctness | (noun) the quality of being sharp and clear | Synonyms: sharpness |
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| (noun) the quality of being not alike; being distinct or different from that otherwise experienced or known | Synonyms: otherness, separateness |
| (noun) the state of being several and distinct | Synonyms: discreteness, separateness, severalty |
| distinguishability | (noun) Capability of being perceived as different or distinct. | - |
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| divestiture | (noun) the sale by a company of a product line or a subsidiary or a division | - |
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| (noun) an order to an offending party to rid itself of property; it has the purpose of depriving the defendant of the gains of wrongful behavior | - |
| domestic | (noun) a servant who is paid to perform menial tasks around the household | Synonyms: domestic help, house servant |
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| domestication | (noun) accommodation to domestic life | - |
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| (noun) the attribute of having been domesticated | Synonyms: tameness |
| (noun) adaptation to intimate association with human beings | - |