| 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 | - |
| cirio | (noun) candlewood of Mexico and southwestern California having tall columnar stems and bearing honey-scented creamy yellow flowers | Synonyms: boojum tree, Fouquieria columnaris, Idria columnaris |
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| cirque | (noun) a steep-walled semicircular basin in a mountain; may contain a lake | Synonyms: corrie, cwm |
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| cirrhosis | (noun) a chronic disease interfering with the normal functioning of the liver; the major cause is chronic alcoholism | Synonyms: cirrhosis of the liver |
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| cirrhus | (noun) usually coiled | Synonyms: cirrus |
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| cirriped | (noun) marine crustaceans with feathery food-catching appendages; free-swimming as larvae; as adults form a hard shell and live attached to submerged surfaces | Synonyms: barnacle, cirripede |
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| cirripede | (noun) marine crustaceans with feathery food-catching appendages; free-swimming as larvae; as adults form a hard shell and live attached to submerged surfaces | Synonyms: barnacle, cirriped |
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| 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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| cirrostratus | (noun) a thin uniform layer of hazy cloud at high altitude | Synonyms: cirrostratus cloud |
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| cirrus | (noun) a slender flexible animal appendage as on barnacles or crinoids or many insects; often tactile | - |
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| (noun) a wispy white cloud (usually of fine ice crystals) at a high altitude (4 to 8 miles) | Synonyms: cirrus cloud |
| (noun) usually coiled | Synonyms: cirrhus |
| 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 |
| cistern | (noun) an artificial reservoir for storing liquids; especially an underground tank for storing rainwater | - |
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| (noun) a tank that holds the water used to flush a toilet | Synonyms: water tank |
| (noun) a sac or cavity containing fluid especially lymph or cerebrospinal fluid | Synonyms: cisterna |
| cisterna | (noun) a sac or cavity containing fluid especially lymph or cerebrospinal fluid | Synonyms: cistern |
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| cistron | (noun) (genetics) a segment of DNA that is involved in producing a polypeptide chain; it can include regions preceding and following the coding DNA as well as introns between the exons; it is considered a unit of heredity | Synonyms: factor, gene |
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| citadel | (noun) a stronghold into which people could go for shelter during a battle | Synonyms: bastion |
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| citation | (noun) an official award (as for bravery or service) usually given as formal public statement | Synonyms: commendation |
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| (noun) a short note recognizing a source of information or of a quoted passage | Synonyms: acknowledgment, cite, credit, mention, quotation, reference |
| (noun) a summons that commands the appearance of a party at a proceeding | - |
| (noun) a passage or expression that is quoted or cited | Synonyms: quotation, quote |
| (noun) (law) the act of citing (as of spoken words or written passages or legal precedents etc.) | - |
| cite | (noun) a short note recognizing a source of information or of a quoted passage | Synonyms: acknowledgment, citation, credit, mention, quotation, reference |
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| cither | (noun) a musical stringed instrument with strings stretched over a flat sounding board; it is laid flat and played with a plectrum and with fingers | Synonyms: zither, zithern |
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| (noun) a 16th century musical instrument resembling a guitar with a pear-shaped soundbox and wire strings | Synonyms: cithern, citole, cittern, gittern |
| cithern | (noun) a 16th century musical instrument resembling a guitar with a pear-shaped soundbox and wire strings | Synonyms: cither, citole, cittern, gittern |
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| citizen | (noun) a native or naturalized member of a state or other political community | - |
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| citizenry | (noun) the body of citizens of a state or country | Synonyms: people |
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| citizenship | (noun) conduct as a citizen | - |
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| (noun) the status of a citizen with rights and duties | - |
| citole | (noun) a 16th century musical instrument resembling a guitar with a pear-shaped soundbox and wire strings | Synonyms: cither, cithern, cittern, gittern |
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| citrange | (noun) more aromatic and acid tasting than oranges; used in beverages and marmalade | - |
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| (noun) more aromatic and acidic than oranges | Synonyms: citrange tree, Citroncirus webberi |
| citrate | (noun) a salt or ester of citric acid | - |
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| citrin | (noun) a vitamin that maintains the resistance of cell and capillary walls to permeation | Synonyms: bioflavinoid, vitamin P |
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| citrine | (noun) semiprecious yellow quartz resembling topaz | - |
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| citron | (noun) large lemonlike fruit with thick aromatic rind; usually preserved | - |
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| (noun) thorny evergreen small tree or shrub of India widely cultivated for its large lemonlike fruits that have thick warty rind | Synonyms: citron tree, Citrus medica |
| citronwood | (noun) wood of a citron tree | - |
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| (noun) durable fragrant wood; used in building (as in the roof of the cathedral at Cordova, Spain) | Synonyms: sandarac |
| citrulline | (noun) an amino acid that does not occur in proteins but is an intermediate in the conversion of ornithine to arginine | - |
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| citrus | (noun) any of numerous fruits of the genus Citrus having thick rind and juicy pulp; grown in warm regions | Synonyms: citrous fruit, citrus fruit |
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| (noun) any of numerous tropical usually thorny evergreen trees of the genus Citrus having leathery evergreen leaves and widely cultivated for their juicy edible fruits having leathery aromatic rinds | Synonyms: citrus tree |
| cittern | (noun) a 16th century musical instrument resembling a guitar with a pear-shaped soundbox and wire strings | Synonyms: cither, cithern, citole, gittern |
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| city | (noun) people living in a large densely populated municipality | Synonyms: metropolis |
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| (noun) a large and densely populated urban area; may include several independent administrative districts | Synonyms: metropolis, urban center |
| (noun) an incorporated administrative district established by state charter | - |
| cityscape | (noun) painting depicting a city or urban area | - |
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| (noun) a viewpoint toward a city or other heavily populated area | - |
| cive | (noun) perennial having hollow cylindrical leaves used for seasoning | Synonyms: Allium schoenoprasum, chive, chives, schnittlaugh |
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| civet | (noun) cat-like mammal typically secreting musk used in perfumes | Synonyms: civet cat |
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| civics | (noun) the social science of civic affairs | - |
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| civies | (noun) civilian garb as opposed to a military uniform | Synonyms: civvies |
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| civilian | (noun) a nonmilitary citizen | - |
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| civilisation | (noun) the quality of excellence in thought and manners and taste | Synonyms: civilization, refinement |
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| (noun) a society in an advanced state of social development (e.g., with complex legal and political and religious organizations) | Synonyms: civilization |
| (noun) a particular society at a particular time and place | Synonyms: civilization, culture |
| (noun) the social process whereby societies achieve an advanced stage of development and organization | Synonyms: civilization |
| civility | (noun) the act of showing regard for others | Synonyms: politeness |
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| (noun) formal or perfunctory politeness | - |
| civilization | (noun) the quality of excellence in thought and manners and taste | Synonyms: civilisation, refinement |
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| (noun) a society in an advanced state of social development (e.g., with complex legal and political and religious organizations) | Synonyms: civilisation |
| (noun) a particular society at a particular time and place | Synonyms: civilisation, culture |
| (noun) the social process whereby societies achieve an advanced stage of development and organization | Synonyms: civilisation |
| civvies | (noun) civilian garb as opposed to a military uniform | Synonyms: civies |
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| classicism | (noun) a movement in literature and art during the 17th and 18th centuries in Europe that favored rationality and restraint and strict forms | Synonyms: classicalism |
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| classicist | (noun) an artistic person who adheres to classicism | - |
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| (noun) a student of ancient Greek and Latin | Synonyms: classical scholar |
| 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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| clinician | (noun) a practitioner (of medicine or psychology) who does clinical work instead of laboratory experiments | - |
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| cocci | (noun) any spherical or nearly spherical bacteria | Synonyms: coccus |
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| coccidioidomycosis | (noun) an infection of the lungs and skin characterized by excessive sputum and nodules | Synonyms: coccidiomycosis, desert rheumatism, valley fever |
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| coccidiomycosis | (noun) an infection of the lungs and skin characterized by excessive sputum and nodules | Synonyms: coccidioidomycosis, desert rheumatism, valley fever |
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| coccidiosis | (noun) (veterinary medicine) infestation with coccidia | - |
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| coccidium | (noun) parasitic on the digestive epithelium of vertebrates and higher invertebrates | Synonyms: eimeria |
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| coccobacillus | (noun) a bacterial cell intermediate in morphology between a coccus and a bacillus; a very short bacillus | - |
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| codicil | (noun) a supplement to a will; a testamentary instrument intended to alter an already executed will | - |
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| coefficient | (noun) a constant number that serves as a measure of some property or characteristic | - |
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| coercion | (noun) using force to cause something to occur | Synonyms: compulsion |
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| (noun) the act of compelling by force of authority | - |
| coincidence | (noun) the temporal property of two things happening at the same time | Synonyms: co-occurrence, concurrence, conjunction |
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| (noun) the quality of occupying the same position or area in space | - |
| (noun) an event that might have been arranged although it was really accidental | Synonyms: happenstance |
| colchicine | (noun) an analgesic drug derived from the saffron plant and used to treat gout | - |
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| commercial | (noun) a commercially sponsored ad on radio or television | Synonyms: commercial message |
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| commercialisation | (noun) the act of commercializing something; involving something in commerce | Synonyms: commercialization |
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| commercialism | (noun) transactions (sales and purchases) having the objective of supplying commodities (goods and services) | Synonyms: commerce, mercantilism |
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| commercialization | (noun) the act of commercializing something; involving something in commerce | Synonyms: commercialisation |
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| complicity | (noun) guilt as an accomplice in a crime or offense | - |
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| concentricity | (noun) the quality of having the same center (as circles inside one another) | - |
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| concierge | (noun) a French caretaker of apartments or a hotel; lives on the premises and oversees people entering and leaving and handles mail and acts as janitor or porter | - |
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| conciliation | (noun) the act of placating and overcoming distrust and animosity | Synonyms: placation, propitiation |
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| (noun) any of various forms of mediation whereby disputes may be settled short of arbitration | - |
| (noun) the state of manifesting goodwill and cooperation after being reconciled | - |
| conciliator | (noun) someone who tries to bring peace | Synonyms: make-peace, pacifier, peacemaker, reconciler |
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| conciseness | (noun) terseness and economy in writing and speaking achieved by expressing a great deal in just a few words | Synonyms: concision, pithiness, succinctness |
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| concision | (noun) terseness and economy in writing and speaking achieved by expressing a great deal in just a few words | Synonyms: conciseness, pithiness, succinctness |
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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 |
| conspecific | (noun) an organism belonging to the same species as another organism | - |
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| conveyancing | (noun) act of transferring property title from one person to another | Synonyms: conveyance, conveyance of title, conveying |
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| convincingness | (noun) the power of argument or evidence to cause belief | - |
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| cosmetician | (noun) someone who sells or applies cosmetics | - |
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| (noun) someone who works in a beauty parlor | Synonyms: beautician |
| council | (noun) a meeting of people for consultation | - |
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| (noun) a body serving in an administrative capacity | - |
| (noun) (Christianity) an assembly of theologians and bishops and other representatives of different churches or dioceses that is convened to regulate matters of discipline or doctrine | - |
| councillor | (noun) a member of a council | Synonyms: council member |
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| councillorship | (noun) the position of council member | Synonyms: councilorship |
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| councilman | (noun) a man who is a council member | - |
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| councilorship | (noun) the position of council member | Synonyms: councillorship |
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| councilwoman | (noun) a woman who is a council member | - |
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| criticism | (noun) a serious examination and judgment of something | Synonyms: critique |
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| (noun) disapproval expressed by pointing out faults or shortcomings | Synonyms: unfavorable judgment |
| (noun) a written evaluation of a work of literature | Synonyms: literary criticism |
| crowdsourcing | (noun) Work done by a large group of anonymous users | - |
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| cruciality | (noun) a state of critical urgency | Synonyms: criticality, criticalness |
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| crucible | (noun) a vessel made of material that does not melt easily; used for high temperature chemical reactions | Synonyms: melting pot |
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| crucifer | (noun) any of various plants of the family Cruciferae | Synonyms: cruciferous plant |
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