| colophony | (noun) translucent brittle substance produced from pine oleoresin; used especially in varnishes and inks and on the bows of stringed instruments | - |
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| color | (noun) a visual attribute of things that results from the light they emit or transmit or reflect | Synonyms: coloring, colour, colouring |
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| (noun) the appearance of objects (or light sources) described in terms of a person's perception of their hue and lightness (or brightness) and saturation | Synonyms: colour |
| (noun) the timbre of a musical sound | Synonyms: coloration, colour, colouration |
| (noun) interest and variety and intensity | Synonyms: colour, vividness |
| (noun) an outward or token appearance or form that is deliberately misleading | Synonyms: colour, gloss, semblance |
| (noun) (physics) the characteristic of quarks that determines their role in the strong interaction | Synonyms: colour |
| (noun) any material used for its color | Synonyms: coloring material, colour, colouring material |
| coloradillo | (noun) handsome shrub with showy orange to scarlet or crimson flowers; Florida and West Indies to Mexico and Brazil | Synonyms: Hamelia erecta, Hamelia patens, scarlet bush, scarlet hamelia |
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| coloration | (noun) choice and use of colors (as by an artist) | Synonyms: colouration |
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| (noun) appearance with regard to color | Synonyms: colouration |
| (noun) the timbre of a musical sound | Synonyms: color, colour, colouration |
| coloratura | (noun) singing with florid ornamentation | - |
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| (noun) a lyric soprano who specializes in coloratura vocal music | Synonyms: coloratura soprano |
| colorcast | (noun) a television program that is broadcast in color | Synonyms: colourcast |
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| colored | (noun) a United States term for Blacks that is now considered offensive | Synonyms: colored person, coloured, coloured person |
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| colorimeter | (noun) a measuring instrument used in colorimetric analysis to determine the quantity of a substance from the color it yields with specific reagents | Synonyms: tintometer |
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| colorimetry | (noun) quantitative chemical analysis by color using a colorimeter | Synonyms: colorimetric analysis |
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| coloring | (noun) the act or process of changing the color of something | Synonyms: colouring |
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| (noun) a visual attribute of things that results from the light they emit or transmit or reflect | Synonyms: color, colour, colouring |
| (noun) a digestible substance used to give color to food | Synonyms: colouring, food color, food coloring, food colour, food colouring |
| colorist | (noun) a painter able to achieve special effects with color | - |
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| colorlessness | (noun) the visual property of being without chromatic color | Synonyms: achromaticity, achromatism, colourlessness |
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| colors | (noun) a flag that shows its nationality | Synonyms: colours |
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| (noun) a distinguishing emblem | Synonyms: colours |
| colossus | (noun) someone that is abnormally large and powerful | Synonyms: behemoth, giant, goliath, monster |
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| (noun) a person of exceptional importance and reputation | Synonyms: behemoth, giant, heavyweight, titan |
| colostomy | (noun) a surgical operation that creates an opening from the colon to the surface of the body to function as an anus | - |
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| colostrum | (noun) milky fluid secreted for the first day or two after parturition | Synonyms: foremilk |
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| colour | (noun) a visual attribute of things that results from the light they emit or transmit or reflect | Synonyms: color, coloring, colouring |
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| (noun) the appearance of objects (or light sources) described in terms of a person's perception of their hue and lightness (or brightness) and saturation | Synonyms: color |
| (noun) the timbre of a musical sound | Synonyms: color, coloration, colouration |
| (noun) interest and variety and intensity | Synonyms: color, vividness |
| (noun) an outward or token appearance or form that is deliberately misleading | Synonyms: color, gloss, semblance |
| (noun) (physics) the characteristic of quarks that determines their role in the strong interaction | Synonyms: color |
| (noun) any material used for its color | Synonyms: color, coloring material, colouring material |
| colouration | (noun) choice and use of colors (as by an artist) | Synonyms: coloration |
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| (noun) appearance with regard to color | Synonyms: coloration |
| (noun) the timbre of a musical sound | Synonyms: color, coloration, colour |
| colourcast | (noun) a television program that is broadcast in color | Synonyms: colorcast |
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| coloured | (noun) a United States term for Blacks that is now considered offensive | Synonyms: colored, colored person, coloured person |
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| colouring | (noun) the act or process of changing the color of something | Synonyms: coloring |
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| (noun) a visual attribute of things that results from the light they emit or transmit or reflect | Synonyms: color, coloring, colour |
| (noun) a digestible substance used to give color to food | Synonyms: coloring, food color, food coloring, food colour, food colouring |
| colourlessness | (noun) the visual property of being without chromatic color | Synonyms: achromaticity, achromatism, colorlessness |
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| colours | (noun) a flag that shows its nationality | Synonyms: colors |
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| (noun) a distinguishing emblem | Synonyms: colors |
| colpitis | (noun) inflammation of the vagina | - |
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| colpocele | (noun) hernia projecting into the vagina | Synonyms: vaginocele |
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| colpocystitis | (noun) inflammation of the vagina and bladder | - |
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| colpocystocele | (noun) hernia in which the urinary bladder protrudes through the wall of the vagina; sometimes occurs after childbirth | Synonyms: cystocele |
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| colposcope | (noun) An endoscopic instrument that magnifies the epithelia of the vagina and cervix in vivo to allow direct observation and study of these tissues. | Synonyms: vaginoscope |
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| colpoxerosis | (noun) a condition in which the vagina is unusually dry | - |
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| colt | (noun) a young male horse under the age of four | - |
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| coltan | (noun) a valuable black mineral combining niobite and tantalite; used in cell phones and computer chips | Synonyms: columbite-tantalite |
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| colter | (noun) a sharp steel wedge that precedes the plow and cuts vertically through the soil | Synonyms: coulter |
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| coltsfoot | (noun) perennial herb with large rounded leaves resembling a colt's foot and yellow flowers appearing before the leaves do; native to Europe but now nearly cosmopolitan; used medicinally especially formerly | Synonyms: Tussilago farfara |
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| (noun) tufted evergreen perennial herb having spikes of tiny white flowers and glossy green round to heart-shaped leaves that become coppery to maroon or purplish in fall | Synonyms: beetleweed, galax, Galax urceolata, galaxy, wandflower |
| colubrid | (noun) mostly harmless temperate-to-tropical terrestrial or arboreal or aquatic snakes | Synonyms: colubrid snake |
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| colugo | (noun) arboreal nocturnal mammal of southeast Asia and the Philippines resembling a lemur and having a fold of skin on each side from neck to tail that is used for long gliding leaps | Synonyms: flying cat, flying lemur |
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| columbarium | (noun) a sepulchral vault or other structure having recesses in the walls to receive cinerary urns | - |
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| (noun) a niche for a funeral urn containing the ashes of the cremated dead | Synonyms: cinerarium |
| (noun) a birdhouse for pigeons | Synonyms: columbary, dovecote |
| columbary | (noun) a birdhouse for pigeons | Synonyms: columbarium, dovecote |
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| columbine | (noun) a plant of the genus Aquilegia having irregular showy spurred flowers; north temperate regions especially mountains | Synonyms: aquilege, aquilegia |
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| columbite | (noun) a black mineral that is an ore of niobium and tantalum | Synonyms: niobite |
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| columbium | (noun) a former name for niobium | - |
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| columbo | (noun) any of various tall perennial herbs constituting the genus Frasera; widely distributed in warm dry upland areas of California, Oregon, and Washington | Synonyms: American columbo, American gentian, deer's-ear, deer's-ears, pyramid plant |
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| columella | (noun) a small column (or structure resembling a column) that is a part of a plant or animal | - |
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| column | (noun) (architecture) a tall vertical cylindrical structure standing upright and used to support a structure | Synonyms: pillar |
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| (noun) a vertical cylindrical structure standing alone and not supporting anything (such as a monument) | Synonyms: pillar |
| (noun) a vertical glass tube used in column chromatography; a mixture is poured in the top and washed through a stationary substance where components of the mixture are adsorbed selectively to form colored bands | Synonyms: chromatography column |
| (noun) any tubular or pillar-like supporting structure in the body | - |
| (noun) an article giving opinions or perspectives | Synonyms: editorial, newspaper column |
| (noun) a page or text that is vertically divided | - |
| (noun) a line of units following one after another | - |
| (noun) a vertical array of numbers or other information | - |
| (noun) anything that approximates the shape of a column or tower | Synonyms: pillar, tower |
| columnea | (noun) tropical plant having thick hairy somewhat toothed leaves and solitary or clustered yellow to scarlet flowers; many cultivated for their flowers and ornamental foliage | - |
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| columniation | (noun) (architecture) the arrangement of columns (especially freestanding columns) in a structure | - |
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| columnist | (noun) a journalist who writes editorials | Synonyms: editorialist |
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| colza | (noun) Eurasian plant cultivated for its seed and as a forage crop | Synonyms: Brassica napus, rape |
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| crocolite | (noun) a rare lead chromite mineral that forms bright orange crystals | - |
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| decolletage | (noun) a low-cut neckline on a woman's dress | - |
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| decolonisation | (noun) the action of changing from colonial to independent status | Synonyms: decolonization |
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| decolonization | (noun) the action of changing from colonial to independent status | Synonyms: decolonisation |
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| discoloration | (noun) the act of changing the natural color of something by making it duller or dingier or unnatural or faded | Synonyms: discolouration |
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| (noun) a soiled or discolored appearance | Synonyms: discolouration, stain |
| discolouration | (noun) the act of changing the natural color of something by making it duller or dingier or unnatural or faded | Synonyms: discoloration |
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| (noun) a soiled or discolored appearance | Synonyms: discoloration, stain |
| ecologist | (noun) a biologist who studies the relation between organisms and their environment | - |
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| ecology | (noun) the branch of biology concerned with the relations between organisms and their environment | Synonyms: bionomics, environmental science |
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| (noun) the environment as it relates to living organisms | - |
| encolure | (noun) the mane of a horse | - |
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| escolar | (noun) large snake mackerel with rings like spectacles around its eyes | Synonyms: Lepidocybium flavobrunneum |
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| glycol | (noun) any of a class of alcohols having 2 hydroxyl groups in each molecule | Synonyms: dihydric alcohol, diol |
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| (noun) a sweet but poisonous syrupy liquid used as an antifreeze and solvent | Synonyms: ethanediol, ethylene glycol |
| glycolysis | (noun) a metabolic process that breaks down carbohydrates and sugars through a series of reactions to either pyruvic acid or lactic acid and releases energy for the body in the form of ATP | - |
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| gynaecologist | (noun) a specialist in gynecology | Synonyms: gynecologist, woman's doctor |
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| gynaecology | (noun) the branch of medicine that deals with the diseases and hygiene of women | Synonyms: gynecology |
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| gynecologist | (noun) a specialist in gynecology | Synonyms: gynaecologist, woman's doctor |
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| gynecology | (noun) the branch of medicine that deals with the diseases and hygiene of women | Synonyms: gynaecology |
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| haematocolpometra | (noun) accumulation of blood in the vagina and uterus | Synonyms: hematocolpometra |
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| haematocolpos | (noun) accumulation of menstrual blood in the vagina (usually due to an imperforate hymen) | Synonyms: hematocolpos |
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| hematocolpometra | (noun) accumulation of blood in the vagina and uterus | Synonyms: haematocolpometra |
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| hematocolpos | (noun) accumulation of menstrual blood in the vagina (usually due to an imperforate hymen) | Synonyms: haematocolpos |
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| homotoxicology | (noun) analysis of sickness within the framework of the body's failure to deal with the burden of toxins. Homeopathic remedies often are used as treatment. Developed by Hans Heinrich Reckeweg. | - |
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| hydrocolloid | (noun) a substance that forms a gel with water | - |
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| lexicologist | (noun) a compiler or writer of a dictionary; a student of the lexical component of language | Synonyms: lexicographer |
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| lexicology | (noun) the branch of linguistics that studies the lexical component of language | - |
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| machicolation | (noun) a projecting parapet supported by corbels on a medieval castle; has openings through which stones or boiling water could be dropped on an enemy | - |
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| malacologist | (noun) a zoologist specializing in the study of mollusks | - |
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| malacology | (noun) the branch of zoology that studies the structure and behavior of mollusks | - |
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| megacolon | (noun) an abnormal enlargement of the colon; can be congenital (as in Hirschsprung's disease) or acquired (as when children refuse to defecate) | - |
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| mesocolon | (noun) mesentery that holds the lower colon to the dorsal abdominal wall | - |
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| multicollinearity | (noun) a case of multiple regression in which the predictor variables are themselves highly correlated | - |
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| musicologist | (noun) a student of musicology | - |
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| musicology | (noun) the scholarly and scientific study of music | - |
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| mycologist | (noun) a botanist who specializes in the study of fungi | - |
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| mycology | (noun) the branch of botany that studies fungi and fungus-caused diseases | - |
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| narcolepsy | (noun) a sleep disorder characterized by sudden and uncontrollable episodes of deep sleep | - |
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| narcoleptic | (noun) a soporific drug that produces an uncontrollable desire to sleep | - |
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| (noun) a person who has narcolepsy | - |
| neocolonialism | (noun) control by a powerful country of its former colonies (or other less developed countries) by economic pressures | - |
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| oncologist | (noun) a specialist in oncology | - |
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| oncology | (noun) the branch of medicine concerned with the study and treatment of tumors | - |
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| palaeoecology | (noun) the branch of ecology that studies ancient ecology | Synonyms: paleoecology |
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| paleoecology | (noun) the branch of ecology that studies ancient ecology | Synonyms: palaeoecology |
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| percolate | (noun) the product of percolation | - |
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| percolation | (noun) the act of making coffee in a percolator | - |
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| (noun) the filtration of a liquid for extraction or purification | - |
| (noun) the slow passage of a liquid through a filtering medium | Synonyms: infiltration |
| percolator | (noun) a coffeepot in which boiling water ascends through a central tube and filters back down through a basket of ground coffee beans | - |
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| pharmacologist | (noun) someone trained in the science of drugs (their composition and uses and effects) | Synonyms: pharmaceutical chemist |
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| pharmacology | (noun) the science or study of drugs: their preparation and properties and uses and effects | Synonyms: materia medica, pharmacological medicine |
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| phycology | (noun) the branch of botany that studies algae | Synonyms: algology |
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| piccolo | (noun) a small flute; pitched an octave above the standard flute | - |
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| pratincole | (noun) Old World shorebird with long pointed wings and short legs; closely related to the coursers | Synonyms: glareole |
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| protocol | (noun) code of correct conduct | - |
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| (noun) forms of ceremony and etiquette observed by diplomats and heads of state | - |
| (noun) (computer science) rules determining the format and transmission of data | Synonyms: communications protocol |
| psychopharmacology | (noun) the study of drugs that affect the mind | - |
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| recollection | (noun) the ability to recall past occurrences | Synonyms: anamnesis, remembrance |
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| (noun) the process of remembering (especially the process of recovering information by mental effort) | Synonyms: recall, reminiscence |
| (noun) something recalled to the mind | - |
| sarcolemma | (noun) an extensible membrane enclosing the contractile substance of a muscle fiber | - |
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