| abacus | (noun) a calculator that performs arithmetic functions by manually sliding counters on rods or in grooves | - |
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| (noun) a tablet placed horizontally on top of the capital of a column as an aid in supporting the architrave | - |
| abarticulation | (noun) dislocation of a joint | - |
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| acculturation | (noun) the adoption of the behavior patterns of the surrounding culture | Synonyms: enculturation, socialisation, socialization |
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| (noun) all the knowledge and values shared by a society | Synonyms: culture |
| (noun) the process of assimilating new ideas into an existing cognitive structure | Synonyms: assimilation |
| accumulation | (noun) the act of accumulating | Synonyms: accrual, accruement |
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| (noun) several things grouped together or considered as a whole | Synonyms: aggregation, assemblage, collection |
| (noun) (finance) profits that are not paid out as dividends but are added to the capital base of the corporation | - |
| (noun) an increase by natural growth or addition | Synonyms: accretion |
| accumulator | (noun) a voltaic battery that stores electric charge | Synonyms: storage battery |
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| (noun) (computer science) a register that has a built-in adder that adds an input number to the contents of the register | Synonyms: accumulator register |
| (noun) a person who is employed to collect payments (as for rent or taxes) | Synonyms: collector, gatherer |
| accuracy | (noun) the quality of being near to the true value | Synonyms: truth |
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| (noun) (mathematics) the number of significant figures given in a number | - |
| accusal | (noun) a formal charge of wrongdoing brought against a person; the act of imputing blame or guilt | Synonyms: accusation |
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| accusation | (noun) a formal charge of wrongdoing brought against a person; the act of imputing blame or guilt | Synonyms: accusal |
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| (noun) an assertion that someone is guilty of a fault or offence | Synonyms: charge |
| accusative | (noun) the case of nouns serving as the direct object of a verb | Synonyms: accusative case, objective case |
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| accused | (noun) a defendant in a criminal proceeding | - |
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| accuser | (noun) someone who imputes guilt or blame | - |
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| acicula | (noun) a needlelike part or structure of a plant or animal or crystal; as a spine or bristle or crystal | - |
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| acuity | (noun) a quick and penetrating intelligence | Synonyms: acuteness, keenness, sharpness |
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| (noun) sharpness of vision; the visual ability to resolve fine detail (usually measured by a Snellen chart) | Synonyms: sharp-sightedness, visual acuity |
| aculea | (noun) small spiny outgrowth on the wings of certain insects | - |
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| aculeus | (noun) a sharp-pointed process especially a sting of a hymenopterous insect | - |
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| (noun) a stiff sharp-pointed plant process | - |
| acumen | (noun) shrewdness shown by keen insight | Synonyms: insightfulness |
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| (noun) a tapering point | - |
| acupressure | (noun) treatment of symptoms by applying pressure with the fingers to specific pressure points on the body | Synonyms: G-Jo, shiatsu |
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| acupuncture | (noun) treatment of pain or disease by inserting the tips of needles at specific points on the skin | Synonyms: stylostixis |
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| acute | (noun) a mark placed above a vowel to indicate pronunciation | Synonyms: acute accent, ague |
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| acuteness | (noun) the quality of having a sharp edge or point | - |
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| (noun) a quick and penetrating intelligence | Synonyms: acuity, keenness, sharpness |
| (noun) a sensitivity that is keen and highly developed | - |
| agriculturalist | (noun) someone concerned with the science or art or business of cultivating the soil | Synonyms: agriculturist, cultivator, grower, raiser |
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| agriculture | (noun) the practice of cultivating the land or raising stock | Synonyms: farming, husbandry |
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| (noun) a large-scale farming enterprise | Synonyms: agribusiness, factory farm |
| (noun) the class of people engaged in growing food | - |
| agriculturist | (noun) someone concerned with the science or art or business of cultivating the soil | Synonyms: agriculturalist, cultivator, grower, raiser |
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| allocution | (noun) (rhetoric) a formal or authoritative address that advises or exhorts | - |
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| altocumulus | (noun) a cumulus cloud at an intermediate altitude of 2 or 3 miles | Synonyms: altocumulus cloud |
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| angrecum | (noun) any of various spectacular orchids of the genus Angraecum having dark green leathery leaves and usually nocturnally scented white or ivory flowers | - |
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| animalcule | (noun) microscopic organism such as an amoeba or paramecium | Synonyms: animalculum |
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| animalculum | (noun) microscopic organism such as an amoeba or paramecium | Synonyms: animalcule |
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| apercu | (noun) a short synopsis | - |
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| apiculture | (noun) the cultivation of bees on a commercial scale for the production of honey | Synonyms: beekeeping |
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| apiculturist | (noun) a farmer who keeps bees for their honey | Synonyms: apiarist, beekeeper |
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| appendicularia | (noun) free-swimming tadpole-shaped pelagic tunicate resembling larvae of other tunicates | - |
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| aquaculture | (noun) rearing aquatic animals or cultivating aquatic plants for food | - |
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| aquiculture | (noun) a technique of growing plants (without soil) in water containing dissolved nutrients | Synonyms: hydroponics, tank farming |
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| arboriculture | (noun) the tending of and caring for trees | Synonyms: tree farming |
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| arboriculturist | (noun) someone trained in forestry | Synonyms: forester, tree farmer |
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| arcus | (noun) a whitish deposit in the shape of an arc that is sometimes seen in the cornea | Synonyms: arcus senilis |
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| articulateness | (noun) the quality of being facile in speech and writing | Synonyms: fluency, volubility |
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| articulatio | (noun) (anatomy) the point of connection between two bones or elements of a skeleton (especially if it allows motion) | Synonyms: articulation, joint |
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| articulation | (noun) the act of joining things in such a way that motion is possible | - |
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| (noun) (anatomy) the point of connection between two bones or elements of a skeleton (especially if it allows motion) | Synonyms: articulatio, joint |
| (noun) the aspect of pronunciation that involves bringing articulatory organs together so as to shape the sounds of speech | - |
| (noun) expressing in coherent verbal form | Synonyms: voice |
| (noun) the shape or manner in which things come together and a connection is made | Synonyms: join, joint, junction, juncture |
| articulator | (noun) a movable speech organ | - |
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| (noun) someone who pronounces words | - |
| ascus | (noun) saclike structure in which ascospores are formed through sexual reproduction of ascomycetes | - |
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| auricula | (noun) a pouch projecting from the top front of each atrium of the heart | Synonyms: auricular appendage, auricular appendix |
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| (noun) yellow-flowered primrose native to Alps; commonly cultivated | Synonyms: bear's ear, Primula auricula |
| auriculare | (noun) the craniometric point at the center of the opening of the external acoustic meatus | Synonyms: auricular point |
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| auscultation | (noun) listening to sounds within the body (usually with a stethoscope) | - |
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| autocue | (noun) a device that displays words for people to read | Synonyms: prompter |
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| autofocus | (noun) an optical device for focussing a camera or other instrument automatically | - |
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| barbecue | (noun) a rack to hold meat for cooking over hot charcoal usually out of doors | Synonyms: barbeque |
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| (noun) a cookout in which food is cooked over an open fire; especially a whole animal carcass roasted on a spit | Synonyms: barbeque |
| (noun) meat that has been barbecued or grilled in a highly seasoned sauce | Synonyms: barbeque |
| barbecuing | (noun) roasting a large piece of meat on a revolving spit out of doors over an open fire | - |
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| barracuda | (noun) any voracious marine fish of the genus Sphyraena having an elongated cylindrical body and large mouth with projecting lower jaw and long strong teeth | - |
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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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| bicuspid | (noun) a tooth having two cusps or points; located between the incisors and the molars | Synonyms: premolar |
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| binoculars | (noun) (plural) an optical instrument designed for simultaneous use by both eyes | Synonyms: field glasses, opera glasses |
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| 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 |
| buccula | (noun) a fold of fatty tissue under the chin | Synonyms: double chin |
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| buttercup | (noun) any of various plants of the genus Ranunculus | Synonyms: butter-flower, butterflower, crowfoot, goldcup, kingcup |
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| caecum | (noun) the cavity in which the large intestine begins and into which the ileum opens | Synonyms: blind gut, cecum |
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| calculability | (noun) The quality of being subject to or ascertainable by calculation. | - |
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| calculation | (noun) the procedure of calculating; determining something by mathematical or logical methods | Synonyms: computation, computing |
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| (noun) problem solving that involves numbers or quantities | Synonyms: computation, figuring, reckoning |
| (noun) planning something carefully and intentionally | Synonyms: deliberation |
| calculator | (noun) a small machine that is used for mathematical calculations; can be mechanical or electronic | Synonyms: calculating machine |
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| (noun) an expert at calculation (or at operating calculating machines) | Synonyms: computer, estimator, figurer, reckoner |
| calculus | (noun) the branch of mathematics that is concerned with limits and with the differentiation and integration of functions | Synonyms: infinitesimal calculus |
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| (noun) a hard lump produced by the concretion of mineral salts; found in hollow organs or ducts of the body | Synonyms: concretion |
| (noun) an incrustation that forms on the teeth and gums | Synonyms: tartar, tophus |
| caliculus | (noun) a small cup-shaped structure (as a taste bud or optic cup or cavity of a coral containing a polyp) | Synonyms: calycle, calyculus |
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| calyculus | (noun) a small cup-shaped structure (as a taste bud or optic cup or cavity of a coral containing a polyp) | Synonyms: caliculus, calycle |
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| (noun) a group of bracts simulating a calyx as in a carnation or hibiscus | Synonyms: calycle, epicalyx, false calyx |
| canaliculus | (noun) a small canal or duct as in some bones and parts of plants | - |
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| canecutter | (noun) a wood rabbit of southeastern United States swamps and lowlands | Synonyms: swamp hare, swamp rabbit, Sylvilagus aquaticus |
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| canicule | (noun) the hot period between early July and early September; a period of inactivity | Synonyms: canicular days, dog days |
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| capsicum | (noun) any of various tropical plants of the genus Capsicum bearing peppers | Synonyms: capsicum pepper plant, pepper |
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| caracul | (noun) hardy coarse-haired sheep of central Asia; lambs are valued for their soft curly black fur | Synonyms: broadtail, karakul |
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| caruncula | (noun) an outgrowth on a plant or animal such as a fowl's wattle or a protuberance near the hilum of certain seeds | Synonyms: caruncle |
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| caucus | (noun) a closed political meeting | - |
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| cecum | (noun) the cavity in which the large intestine begins and into which the ileum opens | Synonyms: blind gut, caecum |
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| charcuterie | (noun) a delicatessen that specializes in meats | - |
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| chiaroscuro | (noun) a monochrome picture made by using several different shades of the same color | - |
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| circuit | (noun) a journey or route all the way around a particular place or area | Synonyms: tour |
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| (noun) movement once around a course | Synonyms: circle, lap |
| (noun) an electrical device that provides a path for electrical current to flow | Synonyms: electric circuit, electrical circuit |
| (noun) a racetrack for automobile races | Synonyms: racing circuit |
| (noun) (law) a judicial division of a state or the United States (so-called because originally judges traveled and held court in different locations); one of the twelve groups of states in the United States that is covered by a particular circuit court of appeals | - |
| (noun) an established itinerary of venues or events that a particular group of people travel to | - |
| (noun) the boundary line encompassing an area or object | Synonyms: circumference |
| circuitousness | (noun) The state of being roundabout, indirect or not to the point. | - |
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| circuitry | (noun) electronic equipment consisting of a system of circuits | - |
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| circular | (noun) an advertisement (usually printed on a page or in a leaflet) intended for wide distribution | Synonyms: bill, broadsheet, broadside, flier, flyer, handbill, throwaway |
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| circularisation | (noun) circulating printed notices as a means of advertising | Synonyms: circularization |
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| circularity | (noun) the roundness of a 2-dimensional figure | Synonyms: disk shape |
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| circularization | (noun) circulating printed notices as a means of advertising | Synonyms: circularisation |
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| circulation | (noun) the spread or transmission of something (as news or money) to a wider group or area | - |
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| (noun) the dissemination of copies of periodicals (as newspapers or magazines) | - |
| (noun) free movement or passage (as of cytoplasm within a cell or sap through a plant) | - |
| (noun) movement through a circuit; especially the movement of blood through the heart and blood vessels | - |
| (noun) number of copies of a newspaper or magazine that are sold | - |
| (noun) (library science) the count of books that are loaned by a library over a specified period | - |
| circumcision | (noun) the act of circumcising; surgical removal of the foreskin of males | - |
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| (noun) the act of circumcising performed on males eight days after birth as a Jewish and Muslim religious rite | - |
| circumduction | (noun) a circular movement of a limb or eye | - |
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| circumference | (noun) the size of something as given by the distance around it | Synonyms: perimeter |
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| (noun) the length of the closed curve of a circle | - |
| (noun) the boundary line encompassing an area or object | Synonyms: circuit |
| circumflex | (noun) a diacritical mark (^) placed above a vowel in some languages to indicate a special phonetic quality | - |
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| circumlocution | (noun) a style that involves indirect ways of expressing things | Synonyms: ambage, periphrasis |
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| (noun) an indirect way of expressing something | Synonyms: indirect expression |
| circumnavigation | (noun) traveling around something (by ship or plane) | - |
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| circumscription | (noun) the act of circumscribing | - |
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| circumspection | (noun) the trait of being circumspect and prudent | Synonyms: caution |
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| (noun) knowing how to avoid embarrassment or distress | Synonyms: discreetness, discretion, prudence |
| circumstance | (noun) information that should be kept in mind when making a decision | Synonyms: condition, consideration |
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| (noun) formal ceremony about important occasions | - |
| (noun) a condition that accompanies or influences some event or activity | - |
| (noun) the set of facts or circumstances that surround a situation or event | Synonyms: context, setting |
| circumstances | (noun) a person's financial situation (good or bad) | - |
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| (noun) your overall circumstances or condition in life (including everything that happens to you) | Synonyms: destiny, fate, fortune, lot, luck, portion |
| circumvention | (noun) the act of evading by going around | - |
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| circumvolution | (noun) the act of turning or winding or folding around a central axis | - |
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| circus | (noun) a performance given by a traveling company of acrobats, clowns, and trained animals | - |
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| (noun) a frenetic disorganized (and often comic) disturbance suggestive of a large public entertainment | Synonyms: carnival |
| (noun) an arena consisting of an oval or circular area enclosed by tiers of seats and usually covered by a tent | - |
| (noun) (antiquity) an open-air stadium for chariot races and gladiatorial games | - |
| (noun) a travelling company of entertainers; including trained animals | - |
| cirrocumulus | (noun) a cloud at a high altitude consisting of a series of regularly arranged small clouds resembling ripples | Synonyms: cirrocumulus cloud |
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| clearcutness | (noun) clarity as a consequence of precision | Synonyms: preciseness |
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| coccus | (noun) any spherical or nearly spherical bacteria | Synonyms: cocci |
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| cocuswood | (noun) wood of the granadilla tree used for making musical instruments especially clarinets | Synonyms: cocoswood, granadilla wood |
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| concubinage | (noun) cohabitation without being legally married | - |
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| concubine | (noun) a woman who cohabits with an important man | Synonyms: courtesan, doxy, paramour |
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