| campstool | (noun) a folding stool | - |
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| canal | (noun) long and narrow strip of water made for boats or for irrigation | - |
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| (noun) a bodily passage or tube lined with epithelial cells and conveying a secretion or other substance | Synonyms: channel, duct, epithelial duct |
| (noun) (astronomy) an indistinct surface feature of Mars once thought to be a system of channels; they are now believed to be an optical illusion | - |
| cancel | (noun) a notation cancelling a previous sharp or flat | Synonyms: natural |
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| canful | (noun) the quantity contained in a can | Synonyms: can |
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| canistel | (noun) ovoid orange-yellow mealy sweet fruit of Florida and West Indies | Synonyms: eggfruit |
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| (noun) tropical tree of Florida and West Indies yielding edible fruit | Synonyms: canistel tree, Pouteria campechiana nervosa |
| cannibal | (noun) a person who eats human flesh | Synonyms: anthropophagite, anthropophagus, man-eater |
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| cannonball | (noun) a solid projectile that in former times was fired from a cannon | Synonyms: cannon ball, round shot |
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| capful | (noun) the quantity that a cap will hold | - |
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| capital | (noun) the upper part of a column that supports the entablature | Synonyms: cap, chapiter |
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| (noun) one of the large alphabetic characters used as the first letter in writing or printing proper names and sometimes for emphasis | Synonyms: capital letter, majuscule, upper-case letter, uppercase |
| (noun) a seat of government | - |
| (noun) a center that is associated more than any other with some activity or product | - |
| (noun) wealth in the form of money or property owned by a person or business and human resources of economic value | - |
| (noun) assets available for use in the production of further assets | Synonyms: working capital |
| capitol | (noun) a building occupied by a state legislature | - |
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| captopril | (noun) a drug (trade name Capoten) that blocks the formation of angiotensin in the kidneys resulting in vasodilation; used in the treatment of hypertension and congestive heart failure | Synonyms: Capoten |
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| caracal | (noun) of deserts of northern Africa and southern Asia | Synonyms: desert lynx, Lynx caracal |
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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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| caramel | (noun) a medium to dark tan color | Synonyms: buff, caramel brown, raw sienna, yellowish brown |
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| (noun) firm chewy candy made from caramelized sugar and butter and milk | - |
| (noun) burnt sugar; used to color and flavor food | Synonyms: caramelized sugar |
| carbonyl | (noun) a compound containing metal combined with carbon monoxide | - |
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| carboxyl | (noun) the univalent radical -COOH; present in and characteristic of organic acids | Synonyms: carboxyl group |
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| cardinal | (noun) crested thick-billed North American finch having bright red plumage in the male | Synonyms: cardinal grosbeak, Cardinalis cardinalis, redbird, Richmondena Cardinalis |
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| (noun) a variable color averaging a vivid red | Synonyms: carmine |
| (noun) (Roman Catholic Church) one of a group of more than 100 prominent bishops in the Sacred College who advise the Pope and elect new Popes | - |
| (noun) the number of elements in a mathematical set; denotes a quantity but not the order | Synonyms: cardinal number |
| carful | (noun) the quantity that a car will hold | - |
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| carnival | (noun) a festival marked by merrymaking and processions | - |
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| (noun) a traveling show; having sideshows and rides and games of skill etc. | Synonyms: fair, funfair |
| (noun) a frenetic disorganized (and often comic) disturbance suggestive of a large public entertainment | Synonyms: circus |
| carol | (noun) a joyful song (usually celebrating the birth of Christ) | - |
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| (noun) joyful religious song celebrating the birth of Christ | Synonyms: Christmas carol |
| carousal | (noun) revelry in drinking; a merry drinking party | Synonyms: bender, booze-up, carouse, toot |
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| carousel | (noun) a large, rotating machine with seats for children to ride on for amusement | Synonyms: carrousel, merry-go-round, roundabout, whirligig |
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| (noun) a conveyer belt that carries luggage to be claimed by air travelers | Synonyms: carrousel, luggage carousel, luggage carrousel |
| carpal | (noun) any of the eight small bones of the wrist of primates | Synonyms: carpal bone, wrist bone |
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| carpel | (noun) a simple pistil or one element of a compound pistil | - |
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| carrel | (noun) small individual study area in a library | Synonyms: carrell, cubicle, stall |
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| carrell | (noun) small individual study area in a library | Synonyms: carrel, cubicle, stall |
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| carrousel | (noun) a large, rotating machine with seats for children to ride on for amusement | Synonyms: carousel, merry-go-round, roundabout, whirligig |
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| (noun) a conveyer belt that carries luggage to be claimed by air travelers | Synonyms: carousel, luggage carousel, luggage carrousel |
| carryall | (noun) a capacious bag or basket | Synonyms: holdall, tote, tote bag |
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| cartel | (noun) a consortium of independent organizations formed to limit competition by controlling the production and distribution of a product or service | Synonyms: combine, corporate trust, trust |
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| cartonful | (noun) the quantity contained in a carton | Synonyms: carton |
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| cartwheel | (noun) acrobatic revolutions with the body turned sideways and the arms and legs outstretched like the spokes of a wheel | - |
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| (noun) a wheel that has wooden spokes and a metal rim | - |
| (noun) a dollar made of silver | Synonyms: silver dollar |
| carvedilol | (noun) beta blocker that can reduce the progression of heart failure in individuals whose disease is not advanced | - |
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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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| caseful | (noun) the quantity contained in a case | Synonyms: case |
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| caskful | (noun) the quantity a cask will hold | Synonyms: cask |
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| casquetel | (noun) a light open casque without a visor or beaver | Synonyms: casquet |
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| cataphyll | (noun) a reduced or scarcely developed leaf at the start of a plant's life (i.e., cotyledons) or in the early stages of leaf development | - |
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| catcall | (noun) a cry expressing disapproval | - |
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| catchall | (noun) an enclosure or receptacle for odds and ends | - |
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| caterwaul | (noun) the yowling sound made by a cat in heat | - |
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| cathedral | (noun) any large and important church | - |
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| (noun) the principal Christian church building of a bishop's diocese | Synonyms: duomo |
| cattail | (noun) tall erect herbs with sword-shaped leaves; cosmopolitan in fresh and salt marshes | - |
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| caul | (noun) the inner membrane of embryos in higher vertebrates (especially when covering the head at birth) | Synonyms: embryonic membrane, veil |
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| (noun) part of the peritoneum attached to the stomach and to the colon and covering the intestines | Synonyms: gastrocolic omentum, greater omentum |
| cavil | (noun) an evasion of the point of an argument by raising irrelevant distinctions or objections | Synonyms: quibble, quiddity |
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| cefadroxil | (noun) a cephalosporin antibiotic (trade name Ultracef) | Synonyms: Ultracef |
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| cell | (noun) (biology) the basic structural and functional unit of all organisms; they may exist as independent units of life (as in monads) or may form colonies or tissues as in higher plants and animals | - |
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| (noun) a device that delivers an electric current as the result of a chemical reaction | Synonyms: electric cell |
| (noun) a room where a prisoner is kept | Synonyms: jail cell, prison cell |
| (noun) small room in which a monk or nun lives | Synonyms: cubicle |
| (noun) any small compartment | - |
| (noun) a hand-held mobile radiotelephone for use in an area divided into small sections, each with its own short-range transmitter/receiver | Synonyms: cellphone, cellular phone, cellular telephone, mobile phone |
| (noun) a small unit serving as part of or as the nucleus of a larger political movement | Synonyms: cadre |
| cental | (noun) a United States unit of weight equivalent to 100 pounds | Synonyms: centner, cwt, hundredweight, quintal, short hundredweight |
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| centennial | (noun) the 100th anniversary (or the celebration of it) | Synonyms: centenary |
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| central | (noun) a workplace that serves as a telecommunications facility where lines from telephones can be connected together to permit communication | Synonyms: exchange, telephone exchange |
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| cereal | (noun) a breakfast food prepared from grain | - |
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| (noun) foodstuff prepared from the starchy grains of cereal grasses | Synonyms: food grain, grain |
| (noun) grass whose starchy grains are used as food: wheat, rice, rye, oats, maize, buckwheat, millet | Synonyms: cereal grass |
| ceremonial | (noun) a formal event performed on a special occasion | Synonyms: ceremonial occasion, ceremony, observance |
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| cesspool | (noun) a covered cistern; waste water and sewage flow into it | Synonyms: cesspit, sink, sump |
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| chanal | (noun) thorny shrub or small tree common in central Argentina having small orange or yellow flowers followed by edible berries | Synonyms: chanar, Geoffroea decorticans |
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| chancel | (noun) area around the altar of a church for the clergy and choir; often enclosed by a lattice or railing | Synonyms: bema, sanctuary |
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| channel | (noun) a way of selling a company's product either directly or via distributors | Synonyms: distribution channel |
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| (noun) a passage for water (or other fluids) to flow through | - |
| (noun) a television station and its programs | Synonyms: television channel, TV channel |
| (noun) a bodily passage or tube lined with epithelial cells and conveying a secretion or other substance | Synonyms: canal, duct, epithelial duct |
| (noun) a path over which electrical signals can pass | Synonyms: transmission channel |
| (noun) (often plural) a means of communication or access | Synonyms: communication channel, line |
| (noun) a deep and relatively narrow body of water (as in a river or a harbor or a strait linking two larger bodies) that allows the best passage for vessels | - |
| (noun) a long narrow furrow cut either by a natural process (such as erosion) or by a tool (as e.g. a groove in a phonograph record) | Synonyms: groove |
| chaparral | (noun) dense vegetation consisting of stunted trees or bushes | Synonyms: bush, scrub |
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| chapel | (noun) a service conducted in a place of worship that has its own altar | Synonyms: chapel service |
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| (noun) a place of worship that has its own altar | - |
| charcoal | (noun) a stick of black carbon material used for drawing | Synonyms: fusain |
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| (noun) a drawing made with a stick of black carbon material | - |
| (noun) a very dark grey color | Synonyms: charcoal gray, charcoal grey, oxford gray, oxford grey |
| (noun) a carbonaceous material obtained by heating wood or other organic matter in the absence of air | Synonyms: wood coal |
| charnel | (noun) a vault or building where corpses or bones are deposited | Synonyms: charnel house |
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| chattel | (noun) personal as opposed to real property; any tangible movable property (furniture or domestic animals or a car etc) | Synonyms: movable, personal chattel |
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| chemical | (noun) material produced by or used in a reaction involving changes in atoms or molecules | Synonyms: chemical substance |
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| chervil | (noun) fresh ferny parsley-like leaves used as a garnish with chicken and veal and omelets and green salads and spinach | - |
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| (noun) aromatic annual Old World herb cultivated for its finely divided and often curly leaves for use especially in soups and salads | Synonyms: Anthriscus cereifolium, beaked parsley |
| chill | (noun) coldness due to a cold environment | Synonyms: gelidity, iciness |
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| (noun) a sudden numbing dread | Synonyms: pall |
| (noun) an almost pleasurable sensation of fright | Synonyms: frisson, quiver, shiver, shudder, thrill, tingle |
| (noun) a sensation of cold that often marks the start of an infection and the development of a fever | Synonyms: shivering |
| chisel | (noun) an edge tool with a flat steel blade with a cutting edge | - |
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| chlorambucil | (noun) an alkylating agent (trade name Leukeran) used to treat some kinds of cancer | Synonyms: Leukeran |
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| chloramphenicol | (noun) an oral antibiotic (trade name Chloromycetin) used to treat serious infections (especially typhoid fever) | Synonyms: Chloromycetin |
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| chlorophyl | (noun) any of a group of green pigments found in photosynthetic organisms; there are four naturally occurring forms | Synonyms: chlorophyll |
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| chlorophyll | (noun) any of a group of green pigments found in photosynthetic organisms; there are four naturally occurring forms | Synonyms: chlorophyl |
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| cholecalciferol | (noun) a fat-soluble vitamin that prevents rickets | Synonyms: calciferol, D, ergocalciferol, viosterol, vitamin D |
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| cholesterol | (noun) an animal sterol that is normally synthesized by the liver; the most abundant steroid in animal tissues | Synonyms: cholesterin |
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| choral | (noun) a stately Protestant (especially Lutheran) hymn tune | Synonyms: chorale |
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| chrysoberyl | (noun) a rare hard yellow green mineral consisting of beryllium aluminate in crystal form; used as a gemstone | - |
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| chunnel | (noun) the railroad tunnel between France and England under the English Channel | Synonyms: Channel Tunnel |
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| churl | (noun) a crude uncouth ill-bred person lacking culture or refinement | Synonyms: barbarian, boor, Goth, peasant, tike, tyke |
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| (noun) a bad-tempered person | Synonyms: crank, crosspatch, grouch, grump |
| (noun) a selfish person who is unwilling to give or spend | Synonyms: niggard, scrooge, skinflint |
| cinquefoil | (noun) an ornamental carving consisting of five arcs arranged in a circle | - |
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| (noun) any of a numerous plants grown for their five-petaled flowers; abundant in temperate regions; alleged to have medicinal properties | Synonyms: five-finger |
| citadel | (noun) a stronghold into which people could go for shelter during a battle | Synonyms: bastion |
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| cl | (noun) a metric unit of volume equal to one hundredth of a liter | Synonyms: centiliter, centilitre |
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| cladophyll | (noun) a flattened stem resembling and functioning as a leaf | Synonyms: cladode, phylloclad, phylloclade |
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| clamshell | (noun) the shell of a clam | - |
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| (noun) a dredging bucket with hinges like the shell of a clam | Synonyms: grapple |
| classical | (noun) traditional genre of music conforming to an established form and appealing to critical interest and developed musical taste | Synonyms: classical music, serious music |
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| coal | (noun) a hot fragment of wood or coal that is left from a fire and is glowing or smoldering | Synonyms: ember |
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| (noun) fossil fuel consisting of carbonized vegetable matter deposited in the Carboniferous period | - |
| coattail | (noun) the loose back flap of a coat that hangs below the waist | - |
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| cochineal | (noun) Mexican red scale insect that feeds on cacti; the source of a red dye | Synonyms: cochineal insect, Dactylopius coccus |
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| (noun) a red dyestuff consisting of dried bodies of female cochineal insects | - |
| cockateel | (noun) small grey Australian parrot with a yellow crested head | Synonyms: cockatiel, cockatoo parrot, Nymphicus hollandicus |
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| cockatiel | (noun) small grey Australian parrot with a yellow crested head | Synonyms: cockateel, cockatoo parrot, Nymphicus hollandicus |
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| cockerel | (noun) a young domestic cock; not older than one year | - |
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| cockleshell | (noun) a small light flimsy boat | - |
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| cocktail | (noun) a short mixed drink | - |
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| (noun) an appetizer served as a first course at a meal | - |
| codicil | (noun) a supplement to a will; a testamentary instrument intended to alter an already executed will | - |
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| coeval | (noun) a person of nearly the same age as another | Synonyms: contemporary |
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| cogwheel | (noun) a toothed wheel that engages another toothed mechanism in order to change the speed or direction of transmitted motion | Synonyms: gear, gear wheel, geared wheel |
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| coil | (noun) a structure consisting of something wound in a continuous series of loops | Synonyms: helix, spiral, volute, whorl |
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| (noun) reactor consisting of a spiral of insulated wire that introduces inductance into a circuit | - |
| (noun) tubing that is wound in a spiral | - |
| (noun) a contraceptive device placed inside a woman's womb | - |
| (noun) a transformer that supplies high voltage to spark plugs in a gasoline engine | - |
| (noun) a round shape formed by a series of concentric circles (as formed by leaves or flower petals) | Synonyms: curl, curlicue, gyre, ringlet, roll, scroll, whorl |
| col | (noun) a pass between mountain peaks; geomorphological term for the lowest point on a mountain ridge between two peaks | Synonyms: gap |
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| collateral | (noun) a security pledged for the repayment of a loan | - |
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| colonel | (noun) a commissioned military officer in the United States Army or Air Force or Marines who ranks above a lieutenant colonel and below a brigadier general | - |
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| colonial | (noun) a resident of a colony | - |
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| commensal | (noun) either of two different animal or plant species living in close association but not interdependent | - |
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| commercial | (noun) a commercially sponsored ad on radio or television | Synonyms: commercial message |
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| committal | (noun) the official act of consigning a person to confinement (as in a prison or mental hospital) | Synonyms: commitment, consignment |
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| (noun) the act of committing a crime | Synonyms: commission, perpetration |
| commonweal | (noun) the good of a community | Synonyms: common good |
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