| catechu | (noun) East Indian spiny tree having twice-pinnate leaves and yellow flowers followed by flat pods; source of black catechu | Synonyms: Acacia catechu, Jerusalem thorn |
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| (noun) extract of the heartwood of Acacia catechu used for dyeing and tanning and preserving fishnets and sails; formerly used medicinally | Synonyms: black catechu |
| catechumen | (noun) a new convert being taught the principles of Christianity by a catechist | Synonyms: neophyte |
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| cecity | (noun) the state of being blind or lacking sight | Synonyms: blindness, sightlessness |
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| cecropia | (noun) North American silkworm moth; larvae feed on the leaves of forest trees | Synonyms: cecropia moth, Hyalophora cecropia |
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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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| celecoxib | (noun) a Cox-2 inhibitor (trade name Celebrex) that relieves pain and inflammation without harming the digestive tract | Synonyms: Celebrex |
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| centerpiece | (noun) something placed at the center of something else (as on a table) | Synonyms: centrepiece |
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| (noun) the central or most important feature | Synonyms: centrepiece |
| centrepiece | (noun) something placed at the center of something else (as on a table) | Synonyms: centerpiece |
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| (noun) the central or most important feature | Synonyms: centerpiece |
| cerecloth | (noun) a waterproof waxed cloth once used as a shroud | - |
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| check | (noun) the act of restraining power or action or limiting excess | Synonyms: bridle, curb |
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| (noun) obstructing an opponent in ice hockey | - |
| (noun) (chess) a direct attack on an opponent's king | - |
| (noun) the act of inspecting or verifying | Synonyms: check-out procedure, checkout |
| (noun) a textile pattern of squares or crossed lines (resembling a checkerboard) | - |
| (noun) a mark left after a small piece has been chopped or broken off of something | Synonyms: chip |
| (noun) an appraisal of the state of affairs | Synonyms: assay |
| (noun) additional proof that something that was believed (some fact or hypothesis or theory) is correct | Synonyms: confirmation, substantiation, verification |
| (noun) something immaterial that interferes with or delays action or progress | Synonyms: balk, baulk, deterrent, handicap, hinderance, hindrance, impediment |
| (noun) the bill in a restaurant | Synonyms: chit, tab |
| (noun) a mark indicating that something has been noted or completed etc. | Synonyms: check mark, tick |
| (noun) a written order directing a bank to pay money | Synonyms: bank check, cheque |
| (noun) the state of inactivity following an interruption | Synonyms: arrest, halt, hitch, stay, stop, stoppage |
| checkbook | (noun) a book issued to holders of checking accounts | Synonyms: chequebook |
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| checker | (noun) one of the flat round pieces used in playing the game of checkers | Synonyms: chequer |
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| (noun) one who checks the correctness of something | - |
| (noun) an attendant who checks coats or baggage | - |
| checkerberry | (noun) spicy red berrylike fruit; source of wintergreen oil | Synonyms: boxberry, spiceberry, teaberry, wintergreen |
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| (noun) creeping shrub of eastern North America having white bell-shaped flowers followed by spicy red berrylike fruit and shiny aromatic leaves that yield wintergreen oil | Synonyms: creeping wintergreen, Gaultheria procumbens, ground-berry, groundberry, mountain tea, teaberry, wintergreen |
| checkerbloom | (noun) perennial purple-flowered wild mallow of western North America that is also cultivated | Synonyms: Sidalcea malviflora, wild hollyhock |
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| checkerboard | (noun) a board having 64 squares of two alternating colors | Synonyms: checker board, chequerboard |
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| checkers | (noun) a checkerboard game for two players who each have 12 pieces; the object is to jump over and so capture the opponent's pieces | Synonyms: draughts |
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| checklist | (noun) a list of items (names or tasks etc.) to be checked or consulted | - |
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| checkmate | (noun) a chess move constituting an inescapable and indefensible attack on the opponent's king | Synonyms: mate |
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| (noun) complete victory | - |
| checkout | (noun) the act of inspecting or verifying | Synonyms: check-out procedure, check |
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| (noun) a counter in a supermarket where you pay for your purchases | Synonyms: checkout counter |
| (noun) the latest time for vacating a hotel room | Synonyms: checkout time |
| checkpoint | (noun) a place (as at a frontier) where travellers are stopped for inspection and clearance | - |
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| checkrein | (noun) a rein designed to keep the horse's head in the desired position | Synonyms: bearing rein |
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| checkroom | (noun) a room where baggage or parcels are checked | Synonyms: left-luggage office |
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| checksum | (noun) a digit representing the sum of the digits in an instance of digital data; used to check whether errors have occurred in transmission or storage | - |
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| checkup | (noun) a thorough physical examination; includes a variety of tests depending on the age and sex and health of the person | Synonyms: health check, medical, medical checkup, medical exam, medical examination |
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| cheekpiece | (noun) either of two straps of a bridle that connect the bit to the headpiece | - |
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| cheesecake | (noun) a photograph of an attractive woman in minimal attire | - |
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| (noun) made with sweetened cream cheese and eggs and cream baked in a crumb crust | - |
| cheesecloth | (noun) a coarse loosely woven cotton gauze; originally used to wrap cheeses | - |
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| chemoreceptor | (noun) a sensory receptor that responds to chemical stimuli | - |
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| chimneypiece | (noun) shelf that projects from wall above fireplace | Synonyms: mantel, mantelpiece, mantle, mantlepiece |
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| chokecherry | (noun) a common wild cherry of eastern North America having small bitter black berries favored by birds | Synonyms: chokecherry tree, Prunus virginiana |
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| (noun) the fruit of the chokecherry tree | - |
| cholecalciferol | (noun) a fat-soluble vitamin that prevents rickets | Synonyms: calciferol, D, ergocalciferol, viosterol, vitamin D |
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| cholecystectomy | (noun) surgical removal of the gall bladder (usually for relief of gallstone pain) | - |
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| cholecystitis | (noun) inflammation of the gall bladder | - |
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| cholecystokinin | (noun) a gastrointestinal hormone that stimulates the secretion of pancreatic enzymes and the contraction and emptying of the gall bladder; its release is stimulated by the presence of fatty acids and amino acids in the small intestine | - |
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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 |
| cleistothecium | (noun) closed spore-bearing structure of some fungi (especially Aspergillaceae and Erysiphaceae) from which spores are released only by decay or disintegration | Synonyms: cleistocarp |
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| clitoridectomy | (noun) excision of the clitoris | Synonyms: female circumcision |
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| codpiece | (noun) (15th-16th century) a flap for the crotch of men's tight-fitting breeches | - |
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| coffeecake | (noun) a cake or sweet bread usually served with coffee | Synonyms: coffee cake |
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| collect | (noun) a short prayer generally preceding the lesson in the Church of Rome or the Church of England | - |
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| collectable | (noun) things considered to be worth collecting (not necessarily valuable or antique) | Synonyms: collectible |
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| collectibility | (noun) The quality of being subject to payment or likely to be paid. | - |
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| collectible | (noun) things considered to be worth collecting (not necessarily valuable or antique) | Synonyms: collectable |
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| collecting | (noun) the act of gathering something together | Synonyms: aggregation, assembling, collection |
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| collection | (noun) the act of gathering something together | Synonyms: aggregation, assembling, collecting |
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| (noun) a publication containing a variety of works | Synonyms: compendium |
| (noun) request for a sum of money | Synonyms: appeal, ingathering, solicitation |
| (noun) several things grouped together or considered as a whole | Synonyms: accumulation, aggregation, assemblage |
| collective | (noun) members of a cooperative enterprise | - |
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| collectivisation | (noun) the organization of a nation or economy on the basis of collectivism | Synonyms: collectivization |
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| collectivism | (noun) a political theory that the people should own the means of production | - |
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| (noun) Soviet communism | Synonyms: Bolshevism, sovietism |
| collectivist | (noun) a person who belongs to the political left | Synonyms: left-winger, leftist |
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| collectivization | (noun) the organization of a nation or economy on the basis of collectivism | Synonyms: collectivisation |
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| collector | (noun) the electrode in a transistor through which a primary flow of carriers leaves the region between the electrodes | - |
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| (noun) a crater that has collected cosmic material hitting the earth | - |
| (noun) a person who is employed to collect payments (as for rent or taxes) | Synonyms: accumulator, gatherer |
| (noun) a person who collects things | Synonyms: aggregator |
| confect | (noun) a rich sweet made of flavored sugar and often combined with fruit or nuts | Synonyms: candy |
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| confection | (noun) the act of creating something (a medicine or drink or soup etc.) by compounding or mixing a variety of components | Synonyms: concoction |
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| (noun) a food rich in sugar | Synonyms: sweet |
| confectionary | (noun) a confectioner's shop | Synonyms: candy store, confectionery |
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| confectioner | (noun) someone who makes candies and other sweets | Synonyms: candymaker |
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| confectionery | (noun) the occupation and skills of a confectioner | - |
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| (noun) a confectioner's shop | Synonyms: candy store, confectionary |
| (noun) candy and other sweets considered collectively | - |
| conjecture | (noun) a hypothesis that has been formed by speculating or conjecturing (usually with little hard evidence) | Synonyms: speculation |
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| (noun) reasoning that involves the formation of conclusions from incomplete evidence | - |
| (noun) a message expressing an opinion based on incomplete evidence | Synonyms: guess, hypothesis, speculation, supposition, surmisal, surmise |
| connectedness | (noun) a relation between things or events (as in the case of one causing the other or sharing features with it) | Synonyms: connection, connexion |
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| (noun) the state of being connected | Synonyms: connection, link |
| connecter | (noun) an instrumentality that connects | Synonyms: connection, connective, connector, connexion |
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| connection | (noun) the act of bringing two things into contact (especially for communication) | Synonyms: connexion, joining |
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| (noun) shifting from one form of transportation to another | Synonyms: connexion |
| (noun) an instrumentality that connects | Synonyms: connecter, connective, connector, connexion |
| (noun) the process of bringing ideas or events together in memory or imagination | Synonyms: association, connexion |
| (noun) a supplier (especially of narcotics) | - |
| (noun) (usually plural) a person who is influential and to whom you are connected in some way (as by family or friendship) | - |
| (noun) a relation between things or events (as in the case of one causing the other or sharing features with it) | Synonyms: connectedness, connexion |
| (noun) a connecting shape | Synonyms: connexion, link |
| (noun) the state of being connected | Synonyms: connectedness, link |
| connective | (noun) an instrumentality that connects | Synonyms: connecter, connection, connector, connexion |
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| (noun) an uninflected function word that serves to conjoin words or phrases or clauses or sentences | Synonyms: conjunction, conjunctive, continuative |
| connectivity | (noun) the property of being connected or the degree to which something has connections | - |
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| connector | (noun) an instrumentality that connects | Synonyms: connecter, connection, connective, connexion |
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| consecration | (noun) (religion) sanctification of something by setting it apart (usually with religious rites) as dedicated to God | - |
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| (noun) a solemn commitment of your life or your time to some cherished purpose (to a service or a goal) | - |
| conspecific | (noun) an organism belonging to the same species as another organism | - |
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| conspectus | (noun) an overall summary | - |
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| convection | (noun) the transfer of heat through a fluid (liquid or gas) caused by molecular motion | - |
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| (noun) (meteorology) the vertical movement of heat or other properties by massive motion within the atmosphere | - |
| convector | (noun) a space heater that transfers heat to the surrounding air by convection | - |
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| copeck | (noun) 100 kopecks equal 1 ruble in Russia | Synonyms: kopeck, kopek |
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| correction | (noun) the act of offering an improvement to replace a mistake; setting right | Synonyms: rectification |
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| (noun) treatment of a specific defect | - |
| (noun) the act of disciplining | Synonyms: discipline |
| (noun) a drop in stock market activity or stock prices following a period of increases | - |
| (noun) a rebuke for making a mistake | Synonyms: chastening, chastisement |
| (noun) something substituted for an error | - |
| (noun) a quantity that is added or subtracted in order to increase the accuracy of a scientific measure | Synonyms: fudge factor |
| corrections | (noun) the social control of offenders through a system of imprisonment and rehabilitation and probation and parole | - |
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| (noun) the department of local government that is responsible for managing the treatment of convicted offenders | Synonyms: department of corrections |
| correctitude | (noun) correct or appropriate behavior | Synonyms: properness, propriety |
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| corrective | (noun) a device for treating injury or disease | Synonyms: restorative |
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| correctness | (noun) conformity to fact or truth | Synonyms: rightness |
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| (noun) the quality of conformity to social expectations | - |
| cosec | (noun) ratio of the hypotenuse to the opposite side of a right-angled triangle | Synonyms: cosecant |
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| cosecant | (noun) ratio of the hypotenuse to the opposite side of a right-angled triangle | Synonyms: cosec |
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| countercheck | (noun) something that checks the correctness of a previous check | Synonyms: double check |
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| (noun) a check that restrains another check | - |
| counterproject | (noun) a project, scheme, or proposal brought forward in opposition to another, as in the negotiation of a treaty. | - |
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| creche | (noun) a hospital where foundlings (infant children of unknown parents) are taken in and cared for | Synonyms: foundling hospital |
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| (noun) a representation of Christ's nativity in the stable at Bethlehem | - |
| cromlech | (noun) a prehistoric megalithic tomb typically having two large upright stones and a capstone | Synonyms: dolmen, portal tomb |
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| crookneck | (noun) yellow squash with a thin curved neck and somewhat warty skin | Synonyms: crookneck squash, summer crookneck |
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| crosscheck | (noun) an illegal check (chopping at an opponent's arms or stick) | - |
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| (noun) an instance of confirming something by considering information from several sources | - |
| crosspiece | (noun) a transverse brace | - |
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| (noun) a horizontal beam that extends across something | Synonyms: crossbeam, trave, traverse |
| cytoarchitectonics | (noun) the cellular composition of a bodily structure | Synonyms: cytoarchitecture |
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| cytoarchitecture | (noun) the cellular composition of a bodily structure | Synonyms: cytoarchitectonics |
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| dec | (noun) (astronomy) the angular distance of a celestial body north or to the south of the celestial equator; expressed in degrees; used with right ascension to specify positions on the celestial sphere | Synonyms: celestial latitude, declination |
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| decade | (noun) the cardinal number that is the sum of nine and one; the base of the decimal system | Synonyms: 10, ten, tenner, X |
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| (noun) a period of 10 years | Synonyms: decennary, decennium |
| decadence | (noun) the state of being degenerate in mental or moral qualities | Synonyms: decadency, degeneracy, degeneration |
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| decadency | (noun) the state of being degenerate in mental or moral qualities | Synonyms: decadence, degeneracy, degeneration |
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| decadent | (noun) a person who has fallen into a decadent state (morally or artistically) | - |
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| decaf | (noun) coffee with the caffeine removed | Synonyms: decaffeinated coffee |
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| decagon | (noun) a polygon with 10 sides and 10 angles | - |
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| decagram | (noun) 10 grams | Synonyms: dag, dekagram, dkg |
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| decahedron | (noun) any polyhedron having ten plane faces | - |
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| decal | (noun) either a design that is fixed to some surface or a paper bearing the design which is to be transferred to the surface | Synonyms: decalcomania |
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| decalcification | (noun) loss of calcium from bones or teeth | - |
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| decalcomania | (noun) the art of transferring designs from specially prepared paper to a wood or glass or metal surface | - |
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| (noun) either a design that is fixed to some surface or a paper bearing the design which is to be transferred to the surface | Synonyms: decal |
| decalescence | (noun) phenomenon that occurs when a metal is being heated and there is a sudden slowing in the rate of temperature increase; slowing is caused by a change in the internal crystal structure of the metal | - |
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| decaliter | (noun) a metric unit of volume or capacity equal to 10 liters | Synonyms: dal, decalitre, dekaliter, dekalitre, dkl |
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| decalitre | (noun) a metric unit of volume or capacity equal to 10 liters | Synonyms: dal, decaliter, dekaliter, dekalitre, dkl |
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