| acantha | (noun) any sharply pointed projection | Synonyms: spine, spur |
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| acanthion | (noun) the craniometric point at the anterior extremity of the intermaxillary suture | - |
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| acanthocephalan | (noun) any of various worms living parasitically in intestines of vertebrates having a retractile proboscis covered with many hooked spines | Synonyms: spiny-headed worm |
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| acanthocyte | (noun) an abnormal red blood cell that has thorny projections of protoplasm | - |
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| acanthocytosis | (noun) the presence of acanthocytes in the blood stream (as in abetalipoproteinemia) | - |
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| acantholysis | (noun) a breakdown of a cell layer in the epidermis (as in pemphigus) | - |
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| acanthoma | (noun) a neoplasm originating in the epidermis | Synonyms: skin tumor |
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| acanthopterygian | (noun) a teleost fish with fins that are supported by sharp inflexible rays | Synonyms: spiny-finned fish |
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| acanthosis | (noun) an abnormal but benign thickening of the prickle-cell layer of the skin (as in psoriasis) | - |
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| acanthus | (noun) any plant of the genus Acanthus having large spiny leaves and spikes or white or purplish flowers; native to Mediterranean region but widely cultivated | - |
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| applicant | (noun) a person who requests or seeks something such as assistance or employment or admission | Synonyms: applier |
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| arccosecant | (noun) the angle that has a cosecant equal to a given number | Synonyms: arc cosecant, inverse cosecant |
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| arcsecant | (noun) the inverse function of the secant; the angle that has a secant equal to a given number | Synonyms: arc secant, arcsec, inverse secant |
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| cant | (noun) two surfaces meeting at an angle different from 90 degrees | Synonyms: bevel, chamfer |
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| (noun) a characteristic language of a particular group (as among thieves) | Synonyms: argot, jargon, lingo, patois, slang, vernacular |
| (noun) stock phrases that have become nonsense through endless repetition | Synonyms: buzzword |
| (noun) insincere talk about religion or morals | Synonyms: pious platitude |
| (noun) a slope in the turn of a road or track; the outside is higher than the inside in order to reduce the effects of centrifugal force | Synonyms: bank, camber |
| cantala | (noun) Philippine plant yielding a hard fibre used in making coarse twine | Synonyms: Agave cantala, maguey |
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| (noun) hard fiber used in making coarse twine; from Philippine agave plants | Synonyms: Cebu maguey, manila maguey |
| cantaloup | (noun) the fruit of a cantaloup vine; small to medium-sized melon with yellowish flesh | Synonyms: cantaloupe |
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| (noun) a variety of muskmelon vine having fruit with a tan rind and orange flesh | Synonyms: cantaloup vine, cantaloupe, cantaloupe vine, Cucumis melo cantalupensis |
| cantaloupe | (noun) the fruit of a cantaloup vine; small to medium-sized melon with yellowish flesh | Synonyms: cantaloup |
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| (noun) a variety of muskmelon vine having fruit with a tan rind and orange flesh | Synonyms: cantaloup, cantaloup vine, cantaloupe vine, Cucumis melo cantalupensis |
| cantata | (noun) a musical composition for voices and orchestra based on a religious text | Synonyms: oratorio |
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| canteen | (noun) a flask for carrying water; used by soldiers or travelers | - |
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| (noun) restaurant in a factory; where workers can eat | - |
| (noun) a recreation room in an institution | - |
| (noun) a restaurant outside; often for soldiers or policemen | Synonyms: mobile canteen |
| (noun) sells food and personal items to personnel at an institution or school or camp etc. | - |
| canter | (noun) a smooth three-beat gait; between a trot and a gallop | Synonyms: lope |
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| canthus | (noun) either of the corners of the eye where the upper and lower eyelids meet | - |
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| canticle | (noun) a hymn derived from the Bible | - |
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| cantilever | (noun) projecting horizontal beam fixed at one end only | - |
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| cantillation | (noun) liturgical chanting | - |
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| cantle | (noun) the back of a saddle seat | - |
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| canto | (noun) a major division of a long poem | - |
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| (noun) the highest part (usually the melody) in a piece of choral music | - |
| canton | (noun) a small administrative division of a country | - |
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| cantonment | (noun) temporary living quarters specially built by the army for soldiers | Synonyms: bivouac, camp, encampment |
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| cantor | (noun) the official of a synagogue who conducts the liturgical part of the service and sings or chants the prayers intended to be performed as solos | Synonyms: hazan |
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| (noun) the musical director of a choir | Synonyms: choirmaster, precentor |
| chalcanthite | (noun) hydrated blue crystalline form of copper sulfate | Synonyms: blue copperas, blue stone, blue vitriol |
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| coelacanth | (noun) fish thought to have been extinct since the Cretaceous period but found in 1938 off the coast of Africa | Synonyms: Latimeria chalumnae |
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| communicant | (noun) a person entitled to receive Communion | - |
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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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| decantation | (noun) the act of gently pouring off a clear liquor (as from its original bottle) without disturbing the lees | - |
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| decanter | (noun) a bottle with a stopper; for serving wine or water | Synonyms: carafe |
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| descant | (noun) a decorative musical accompaniment (often improvised) added above a basic melody | Synonyms: discant |
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| desiccant | (noun) a substance that promotes drying (e.g., calcium oxide absorbs water and is used to remove moisture) | Synonyms: drier, drying agent, siccative |
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| discant | (noun) a decorative musical accompaniment (often improvised) added above a basic melody | Synonyms: descant |
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| epicanthus | (noun) a vertical fold of skin over the nasal canthus; typical for many east Asian peoples; sometimes occurs in Down's syndrome | Synonyms: epicanthic fold |
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| incantation | (noun) a ritual recitation of words or sounds believed to have a magical effect | Synonyms: conjuration |
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| indicant | (noun) a number or ratio (a value on a scale of measurement) derived from a series of observed facts; can reveal relative changes as a function of time | Synonyms: index, index number, indicator |
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| (noun) something that serves to indicate or suggest | Synonyms: indication |
| intoxicant | (noun) a drug that can produce a state of intoxication | - |
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| (noun) a liquor or brew containing alcohol as the active agent | Synonyms: alcohol, alcoholic beverage, alcoholic drink, inebriant |
| keratoacanthoma | (noun) skin tumor that grows rapidly (especially in older people) and resembles a carcinoma but does not spread; it usually disappears spontaneously, often leaving a scar | - |
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| lubricant | (noun) a substance capable of reducing friction by making surfaces smooth or slippery | Synonyms: lube, lubricating substance, lubricator |
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| lycanthrope | (noun) a monster able to change appearance from human to wolf and back again | Synonyms: loup-garou, werewolf, wolfman |
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| lycanthropy | (noun) (folklore) the magical ability of a person to assume the characteristics of a wolf | - |
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| mendicant | (noun) a pauper who lives by begging | Synonyms: beggar |
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| (noun) a male member of a religious order that originally relied solely on alms | Synonyms: friar |
| mercantilism | (noun) transactions (sales and purchases) having the objective of supplying commodities (goods and services) | Synonyms: commerce, commercialism |
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| (noun) an economic system (Europe in 18th century) to increase a nation's wealth by government regulation of all of the nation's commercial interests | Synonyms: mercantile system |
| pyracanth | (noun) any of various thorny shrubs of the genus Pyracantha bearing small white flowers followed by hard red or orange-red berries | Synonyms: fire thorn, firethorn, Pyracantha |
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| recantation | (noun) a disavowal or taking back of a previous assertion | Synonyms: abjuration, retraction |
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| scantiness | (noun) the quality of being meager | Synonyms: exiguity, leanness, meagerness, meagreness, poorness, scantness |
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| (noun) Of a garment, the property of being very small, light, or revealing. | Synonyms: skimpiness |
| scantling | (noun) an upright in house framing | Synonyms: stud |
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| scantness | (noun) the quality of being meager | Synonyms: exiguity, leanness, meagerness, meagreness, poorness, scantiness |
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| scanty | (noun) short underpants for women or children | Synonyms: pantie, panty, step-in |
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| secant | (noun) ratio of the hypotenuse to the adjacent side of a right-angled triangle | Synonyms: sec |
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| (noun) a straight line that intersects a curve at two or more points | - |
| supplicant | (noun) one praying humbly for something | Synonyms: petitioner, requester, suppliant |
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| (noun) someone who prays to God | Synonyms: prayer |
| toxicant | (noun) any substance that causes injury or illness or death of a living organism | Synonyms: poison, poisonous substance |
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| tragacanth | (noun) a gum used in pharmacy, adhesives, and textile printing | - |
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| vesicant | (noun) a chemical agent that causes blistering (especially mustard gas) | Synonyms: vesicatory |
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