| affricative | (noun) a composite speech sound consisting of a stop and a fricative articulated at the same point (as `ch' in `chair' and `j' in `joy') | Synonyms: affricate, affricate consonant |
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| aflatoxin | (noun) a potent carcinogen from the fungus Aspergillus; can be produced and stored for use as a bioweapon | - |
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| aftermath | (noun) the outcome of an event especially as relative to an individual | Synonyms: consequence |
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| (noun) the consequences of an event (especially a catastrophic event) | Synonyms: backwash, wake |
| aftersensation | (noun) an image (usually a negative image) that persists after stimulation has ceased | Synonyms: afterimage |
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| agate | (noun) an impure form of quartz consisting of banded chalcedony; used as a gemstone and for making mortars and pestles | - |
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| agateware | (noun) pottery that is veined and mottled to resemble agate | - |
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| ageratum | (noun) any plant of the genus Ageratum having opposite leaves and small heads of blue or white flowers | - |
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| (noun) rhizomatous plant of central and southeastern United States and West Indies having large showy heads of clear blue flowers; sometimes placed in genus Eupatorium | Synonyms: Conoclinium coelestinum, Eupatorium coelestinum, mist-flower, mistflower |
| agglomerate | (noun) a collection of objects laid on top of each other | Synonyms: cumulation, cumulus, heap, mound, pile |
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| (noun) volcanic rock consisting of large fragments fused together | - |
| agglomeration | (noun) the act of collecting in a mass; the act of agglomerating | - |
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| (noun) a jumbled collection or mass | - |
| agglomerator | (noun) a device that causes material to gather into rounded balls | - |
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| agglutination | (noun) the building of words from component morphemes that retain their form and meaning in the process of combining | - |
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| (noun) a clumping of bacteria or red cells when held together by antibodies (agglutinins) | - |
| (noun) the coalescing of small particles that are suspended in solution; these larger masses are then (usually) precipitated | Synonyms: agglutinating activity |
| aggravation | (noun) unfriendly behavior that causes anger or resentment | Synonyms: irritation, provocation |
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| (noun) action that makes a problem or a disease (or its symptoms) worse | Synonyms: exacerbation |
| (noun) an exasperated feeling of annoyance | Synonyms: exasperation |
| aggravator | (noun) an unpleasant person who is annoying or exasperating | Synonyms: annoyance |
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| aggregate | (noun) the whole amount | Synonyms: sum, total, totality |
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| (noun) a sum total of many heterogenous things taken together | Synonyms: congeries, conglomeration |
| (noun) material such as sand or gravel used with cement and water to make concrete, mortar, or plaster | - |
| aggregation | (noun) the act of gathering something together | Synonyms: assembling, collecting, collection |
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| (noun) several things grouped together or considered as a whole | Synonyms: accumulation, assemblage, collection |
| aggregator | (noun) a person who collects things | Synonyms: collector |
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| agitation | (noun) disturbance usually in protest | Synonyms: excitement, hullabaloo, turmoil, upheaval |
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| (noun) the act of agitating something; causing it to move around (usually vigorously) | - |
| (noun) the feeling of being agitated; not calm | - |
| (noun) a state of agitation or turbulent change or development | Synonyms: ferment, fermentation, tempestuousness, unrest |
| (noun) a mental state of extreme emotional disturbance | - |
| agitator | (noun) one who agitates; a political troublemaker | Synonyms: fomenter |
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| agnate | (noun) one related on the father's side | Synonyms: patrikin, patrilineal kin, patrilineal sib, patrisib |
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| agnathan | (noun) eel-shaped vertebrate without jaws or paired appendages including the cyclostomes and some extinct forms | Synonyms: jawless fish, jawless vertebrate |
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| agnation | (noun) line of descent traced through the paternal side of the family | Synonyms: patrilineage |
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| aguacate | (noun) a pear-shaped tropical fruit with green or blackish skin and rich yellowish pulp enclosing a single large seed | Synonyms: alligator pear, avocado, avocado pear |
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| albatross | (noun) large web-footed birds of the Southern Hemisphere having long narrow wings; noted for powerful gliding flight | Synonyms: mollymawk |
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| (noun) (figurative) something that hinders or handicaps | Synonyms: millstone |
| alendronate | (noun) a tablet (trade name Fosamax) prescribed to prevent or treat osteoporosis in women after menopause | Synonyms: Fosamax |
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| alienation | (noun) the action of alienating; the action of causing to become unfriendly | - |
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| (noun) (law) the voluntary and absolute transfer of title and possession of real property from one person to another | - |
| (noun) the feeling of being alienated from other people | Synonyms: disaffection, estrangement |
| (noun) separation resulting from hostility | Synonyms: estrangement |
| alienator | (noun) an unpleasant person who causes friendly people to become indifferent or unfriendly or hostile | - |
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| alimentation | (noun) the act of supplying food and nourishment | Synonyms: feeding |
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| (noun) a source of materials to nourish the body | Synonyms: aliment, nourishment, nutriment, nutrition, sustenance, victuals |
| aliterate | (noun) a person who can read but is disinclined to derive information from literary sources | Synonyms: aliterate person |
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| alkylbenzenesulfonate | (noun) sulfonate of alkyl benzene | - |
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| allegation | (noun) (law) a formal accusation against somebody (often in a court of law) | - |
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| (noun) statements affirming or denying certain matters of fact that you are prepared to prove | Synonyms: allegement |
| alleviation | (noun) the act of reducing something unpleasant (as pain or annoyance) | Synonyms: easement, easing, relief |
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| (noun) the feeling that comes when something burdensome is removed or reduced | Synonyms: assuagement, relief |
| alleviator | (noun) remedy that alleviates pain without curing | Synonyms: alleviant, palliative |
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| (noun) a therapist who makes suffering more endurable | - |
| alligator | (noun) either of two amphibious reptiles related to crocodiles but with shorter broader snouts | Synonyms: gator |
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| (noun) leather made from alligator's hide | - |
| alligatorfish | (noun) small very elongate sea poachers | Synonyms: Aspidophoroides monopterygius |
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| alliteration | (noun) use of the same consonant at the beginning of each stressed syllable in a line of verse | Synonyms: beginning rhyme, head rhyme, initial rhyme |
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| alliterator | (noun) a speaker or writer who makes use of alliteration | - |
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| allocation | (noun) the act of distributing by allotting or apportioning; distribution according to a plan | Synonyms: allotment, apportioning, apportionment, assignation, parceling, parcelling |
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| (noun) (computer science) the assignment of particular areas of a magnetic disk to particular data or instructions | Synonyms: storage allocation |
| (noun) a share set aside for a specific purpose | Synonyms: allotment |
| allocator | (noun) a person with authority to allot or deal out or apportion | Synonyms: distributor |
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| allopathy | (noun) the usual method of treating disease with remedies that produce effects differing from those produced by the disease itself | - |
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| allopatry | (noun) the occurrence of related organisms in separate geographical areas with no overlap | - |
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| alluviation | (noun) the phenomenon of sediment or gravel accumulating | Synonyms: deposit, sedimentation |
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| alphabetisation | (noun) the act of putting in alphabetical order | Synonyms: alphabetization |
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| alphabetization | (noun) the act of putting in alphabetical order | Synonyms: alphabetisation |
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| alsatian | (noun) breed of large shepherd dogs used in police work and as a guide for the blind | Synonyms: German police dog, German shepherd, German shepherd dog |
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| alteration | (noun) the act of revising or altering (involving reconsideration and modification) | Synonyms: revision |
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| (noun) the act of making something different (as e.g. the size of a garment) | Synonyms: adjustment, modification |
| (noun) an event that occurs when something passes from one state or phase to another | Synonyms: change, modification |
| altercation | (noun) noisy quarrel | Synonyms: affray, fracas |
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| alternate | (noun) someone who takes the place of another person | Synonyms: replacement, surrogate |
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| alternation | (noun) successive change from one thing or state to another and back again | - |
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| alternative | (noun) one of a number of things from which only one can be chosen | Synonyms: choice, option |
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| alternator | (noun) an old term for an electric generator that produces alternating current (especially in automobiles) | - |
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| altostratus | (noun) a stratus cloud at an intermediate altitude of 2 or 3 miles | Synonyms: altostratus cloud |
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| aluminate | (noun) a compound of alumina and a metallic oxide | - |
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| amadavat | (noun) red Asian weaverbirds often kept as cage birds | Synonyms: avadavat |
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| amalgamation | (noun) the combination of two or more commercial companies | Synonyms: merger, uniting |
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| amalgamator | (noun) a businessman who arranges an amalgamation of two or more commercial companies | - |
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| amateur | (noun) someone who pursues a study or sport as a pastime | - |
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| (noun) an athlete who does not play for pay | - |
| amateurishness | (noun) something that demonstrates a lack of professional competency | - |
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| amateurism | (noun) the conviction that people should participate in sports as a hobby (for the fun of it) rather than for money | - |
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| amativeness | (noun) the arousal of feelings of sexual desire | Synonyms: amorousness, eroticism, erotism, sexiness |
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| amatungulu | (noun) very large closely branched South African shrub having forked bright green spines and shiny leaves | Synonyms: Carissa grandiflora, Carissa macrocarpa, natal plum |
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| ambulation | (noun) walking about | - |
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| ambulatory | (noun) a covered walkway (as in a cloister) | - |
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| amelioration | (noun) the act of relieving ills and changing for the better | Synonyms: betterment, melioration |
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| ammonification | (noun) impregnation with ammonia or a compound of ammonia | - |
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| amortisation | (noun) payment of an obligation in a series of installments or transfers | Synonyms: amortization |
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| (noun) the reduction of the value of an asset by prorating its cost over a period of years | Synonyms: amortization |
| amortization | (noun) payment of an obligation in a series of installments or transfers | Synonyms: amortisation |
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| (noun) the reduction of the value of an asset by prorating its cost over a period of years | Synonyms: amortisation |
| amphitheater | (noun) an oval large stadium with tiers of seats; an arena in which contests and spectacles are held | Synonyms: amphitheatre, coliseum |
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| (noun) a sloping gallery with seats for spectators (as in an operating room or theater) | Synonyms: amphitheatre |
| amphitheatre | (noun) an oval large stadium with tiers of seats; an arena in which contests and spectacles are held | Synonyms: amphitheater, coliseum |
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| (noun) a sloping gallery with seats for spectators (as in an operating room or theater) | Synonyms: amphitheater |
| amplification | (noun) (electronics) the act of increasing voltage or power or current | - |
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| (noun) addition of extra material or illustration or clarifying detail | Synonyms: elaboration |
| (noun) the amount of increase in signal power or voltage or current expressed as the ratio of output to input | Synonyms: gain |
| amputation | (noun) a surgical removal of all or part of a limb | - |
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| (noun) a condition of disability resulting from the loss of one or more limbs | - |
| amputator | (noun) a surgeon who removes part or all of a limb | - |
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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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| anathema | (noun) a formal ecclesiastical curse accompanied by excommunication | - |
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| (noun) a detested person | Synonyms: bete noire |
| anathematisation | (noun) the formal act of pronouncing (someone or something) accursed | Synonyms: anathematization |
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| anathematization | (noun) the formal act of pronouncing (someone or something) accursed | Synonyms: anathematisation |
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| anatomical | (noun) an expression that relates to anatomy | Synonyms: anatomical reference |
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| anatomist | (noun) an expert in anatomy | - |
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| anatomy | (noun) a detailed analysis | - |
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| (noun) alternative names for the body of a human being | Synonyms: bod, build, chassis, figure, flesh, form, frame, human body, material body, physical body, physique, shape, soma |
| (noun) the branch of morphology that deals with the structure of animals | Synonyms: general anatomy |
| anatotitan | (noun) one of the largest and most famous duck-billed dinosaurs | - |
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| anatoxin | (noun) a bacterial toxin that has been weakened until it is no longer toxic but is strong enough to induce the formation of antibodies and immunity to the specific disease caused by the toxin | Synonyms: toxoid |
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| angiopathy | (noun) any disease of the blood vessels or lymph ducts | - |
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| angulation | (noun) the act of making angulate (having corners) | - |
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| (noun) the precise measurement of angles | - |
| animalisation | (noun) an act that makes people cruel or lacking normal human qualities | Synonyms: animalization, brutalisation, brutalization |
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| animalization | (noun) an act that makes people cruel or lacking normal human qualities | Synonyms: animalisation, brutalisation, brutalization |
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| (noun) a depiction in the form of an animal | - |
| animateness | (noun) the property of being animated; having animal life as distinguished from plant life | Synonyms: aliveness, liveness |
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| animation | (noun) the making of animated cartoons | - |
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| (noun) general activity and motion | Synonyms: liveliness |
| (noun) the activity of giving vitality and vigour to something | Synonyms: invigoration, vivification |
| (noun) the property of being able to survive and grow | Synonyms: vitality |
| (noun) quality of being active or spirited or alive and vigorous | Synonyms: brio, invigoration, spiritedness, vivification |
| (noun) the condition of living or the state of being alive | Synonyms: aliveness, life, living |
| animatism | (noun) the attribution of consciousness and personality to natural phenomena such as thunderstorms and earthquakes and to objects such as plants and stones | - |
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| animator | (noun) the technician who produces animated cartoons | - |
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| (noun) someone who imparts energy and vitality and spirit to other people | Synonyms: energiser, energizer, vitaliser, vitalizer |
| animatronics | (noun) the construction of robots to look like animals (developed for Disneyland) | - |
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| annexation | (noun) the formal act of acquiring something (especially territory) by conquest or occupation | - |
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| (noun) incorporation by joining or uniting | Synonyms: appropriation |
| annihilation | (noun) destruction by annihilating something | Synonyms: obliteration |
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| (noun) total destruction | Synonyms: disintegration |
| annihilator | (noun) a total destroyer | - |
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| annotating | (noun) the act of adding notes | Synonyms: annotation |
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| annotation | (noun) the act of adding notes | Synonyms: annotating |
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| (noun) a comment or instruction (usually added) | Synonyms: notation, note |
| annotator | (noun) a commentator who writes notes to a text | - |
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| annunciation | (noun) a formal public statement | Synonyms: announcement, declaration, proclamation |
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| annunciator | (noun) an indicator that announces which electrical circuit has been active (as on a telephone switchboard) | - |
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| anovulation | (noun) the absence of ovulation due to immaturity or post-maturity or pregnancy or oral contraceptive pills or dysfunction of the ovary | - |
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| anteater | (noun) any of several tropical American mammals of the family Myrmecophagidae which lack teeth and feed on ants and termites | Synonyms: New World anteater |
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| (noun) nocturnal burrowing mammal of the grasslands of Africa that feeds on termites; sole extant representative of the order Tubulidentata | Synonyms: aardvark, ant bear, Orycteropus afer |
| (noun) a burrowing monotreme mammal covered with spines and having a long snout and claws for hunting ants and termites; native to Australia | Synonyms: echidna, spiny anteater |
| (noun) a burrowing monotreme mammal covered with spines and having a long snout and claws for hunting ants and termites; native to New Guinea | Synonyms: echidna, spiny anteater |
| (noun) toothless mammal of southern Africa and Asia having a body covered with horny scales and a long snout for feeding on ants and termites | Synonyms: pangolin, scaly anteater |
| (noun) small Australian marsupial having long snout and strong claws for feeding on termites; nearly extinct | Synonyms: banded anteater, Myrmecobius fasciatus, numbat |
| antepenultimate | (noun) the 3rd syllable of a word counting back from the end | Synonyms: antepenult, antepenultima |
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