| antimacassar | (noun) a piece of ornamented cloth that protects the back of a chair from hair oils | - |
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| batrachomyomachia | (noun) a silly altercation | - |
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| camachile | (noun) common thorny tropical American tree having terminal racemes of yellow flowers followed by sickle-shaped or circinate edible pods and yielding good timber and a yellow dye and mucilaginous gum | Synonyms: huamachil, manila tamarind, Pithecellobium dulce, wild tamarind |
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| climacteric | (noun) the time in a woman's life in which the menstrual cycle ends | Synonyms: change of life, menopause |
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| (noun) a period in a man's life corresponding to menopause | - |
| contumacy | (noun) willful refusal to appear before a court or comply with a court order; can result in a finding of contempt of court | - |
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| (noun) obstinate rebelliousness and insubordination; resistance to authority | - |
| dichromacy | (noun) a deficiency of color vision in which the person can match any given hue by mixing only two other wavelengths of light (as opposed to the three wavelengths needed by people with normal color vision) | Synonyms: dichromasy, dichromatism, dichromatopsia, dichromia |
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| diplomacy | (noun) subtly skillful handling of a situation | Synonyms: delicacy, discreetness, finesse |
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| (noun) wisdom in the management of public affairs | Synonyms: statecraft, statesmanship |
| (noun) negotiation between nations | Synonyms: diplomatic negotiations |
| emaciation | (noun) extreme leanness (usually caused by starvation or disease) | Synonyms: boniness, bonyness, gauntness, maceration |
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| grimace | (noun) a contorted facial expression | Synonyms: face |
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| huamachil | (noun) common thorny tropical American tree having terminal racemes of yellow flowers followed by sickle-shaped or circinate edible pods and yielding good timber and a yellow dye and mucilaginous gum | Synonyms: camachile, manila tamarind, Pithecellobium dulce, wild tamarind |
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| illegitimacy | (noun) unlawfulness by virtue of not being authorized by or in accordance with law | - |
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| (noun) the status of being born to parents who were not married | Synonyms: bar sinister, bastardy |
| immaculacy | (noun) The characteristic of having no stain or blemish; of being spotless, undefiled, clear, pure. | - |
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| immaculateness | (noun) the state of being spotlessly clean | Synonyms: spotlessness |
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| inanimacy | (noun) (linguistics) The characteristic of a noun, in some languages, that is dependent on its unliving or non-sentient nature; this characteristic affects grammatical features (it can modify verbs used with the noun, affect the noun's declension etc). | - |
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| intimacy | (noun) close or warm friendship | Synonyms: closeness, familiarity |
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| (noun) a feeling of being intimate and belonging together | Synonyms: closeness |
| (noun) a usually secretive or illicit sexual relationship | Synonyms: affair, affaire, amour, involvement, liaison |
| legitimacy | (noun) lawfulness by virtue of being authorized or in accordance with law | - |
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| (noun) undisputed credibility | Synonyms: authenticity, genuineness |
| logomach | (noun) someone given to disputes over words | Synonyms: logomachist |
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| logomachist | (noun) someone given to disputes over words | Synonyms: logomach |
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| logomachy | (noun) argument about words or the meaning of words | - |
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| mac | (noun) a waterproof raincoat made of rubberized fabric | Synonyms: macintosh, mack, mackintosh |
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| macadam | (noun) a paved surface having compressed layers of broken rocks held together with tar | Synonyms: tarmac, tarmacadam |
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| (noun) broken stone used in macadamized roadways | - |
| macadamia | (noun) any tree of the genus Macadamia | Synonyms: macadamia tree |
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| macamba | (noun) tropical American feather palm having a swollen spiny trunk and edible nuts | Synonyms: Acrocomia aculeata, gri-gri, grugru, grugru palm |
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| macaque | (noun) short-tailed monkey of rocky regions of Asia and Africa | - |
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| macaron | (noun) a sweet meringue-based confection made with egg white, icing sugar, granulated sugar, almond powder or ground almond, and food colouring. | - |
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| macaroni | (noun) pasta in the form of slender tubes | - |
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| (noun) a British dandy in the 18th century who affected Continental mannerisms | - |
| macaroon | (noun) chewy cookie usually containing almond paste | - |
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| macaw | (noun) long-tailed brilliantly colored parrot of Central America and South America; among the largest and showiest of parrots | - |
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| mace | (noun) a ceremonial staff carried as a symbol of office or authority | - |
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| (noun) spice made from the dried fleshy covering of the nutmeg seed | - |
| (noun) an official who carries a mace of office | Synonyms: macebearer, macer |
| macebearer | (noun) an official who carries a mace of office | Synonyms: mace, macer |
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| macedoine | (noun) mixed diced fruits or vegetables; hot or cold | - |
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| macer | (noun) an official who carries a mace of office | Synonyms: mace, macebearer |
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| macerate | (noun) a macerated substance, sometimes used to infuse vodka with flavor. | - |
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| maceration | (noun) extreme leanness (usually caused by starvation or disease) | Synonyms: boniness, bonyness, emaciation, gauntness |
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| (noun) softening due to soaking or steeping | - |
| machete | (noun) a large heavy knife used as a weapon or for cutting vegetation | Synonyms: matchet, panga |
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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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| machilid | (noun) wingless insect living in dark moist places as under dead tree trunks; they make erratic leaps when disturbed | Synonyms: jumping bristletail |
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| machination | (noun) a crafty and involved plot to achieve your (usually sinister) ends | Synonyms: intrigue |
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| machinator | (noun) a member of a conspiracy | Synonyms: coconspirator, conspirator, plotter |
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| machine | (noun) any mechanical or electrical device that transmits or modifies energy to perform or assist in the performance of human tasks | - |
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| (noun) a motor vehicle with four wheels; usually propelled by an internal combustion engine | Synonyms: auto, automobile, car, motorcar |
| (noun) a device for overcoming resistance at one point by applying force at some other point | Synonyms: simple machine |
| (noun) a group that controls the activities of a political party | Synonyms: political machine |
| (noun) an intricate organization that accomplishes its goals efficiently | - |
| (noun) an efficient person | - |
| machinery | (noun) machines or machine systems collectively | - |
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| (noun) a system of means and activities whereby a social institution functions | - |
| machinist | (noun) a craftsman skilled in operating machine tools | Synonyms: mechanic, shop mechanic |
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| machismo | (noun) exaggerated masculinity | - |
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| machmeter | (noun) speedometer for measuring the speed of an aircraft relative to the speed of sound | - |
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| macho | (noun) a male exhibiting or characterized by machismo | - |
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| macintosh | (noun) a waterproof raincoat made of rubberized fabric | Synonyms: mac, mack, mackintosh |
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| (noun) a lightweight waterproof (usually rubberized) fabric | Synonyms: mackintosh |
| mack | (noun) a waterproof raincoat made of rubberized fabric | Synonyms: mac, macintosh, mackintosh |
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| mackerel | (noun) any of various fishes of the family Scombridae | - |
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| (noun) flesh of very important usually small (to 18 in) fatty Atlantic fish | - |
| mackinaw | (noun) a heavy woolen cloth heavily napped and felted, often with a plaid design | - |
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| (noun) a flat-bottomed boat used on upper Great Lakes | Synonyms: Mackinaw boat |
| (noun) a thick plaid blanket formerly used in the northwestern United States | Synonyms: Mackinaw blanket |
| (noun) a short plaid coat made of made of thick woolen material | Synonyms: Mackinaw coat |
| mackintosh | (noun) a lightweight waterproof (usually rubberized) fabric | Synonyms: macintosh |
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| (noun) a waterproof raincoat made of rubberized fabric | Synonyms: mac, macintosh, mack |
| mackle | (noun) a printed impression that is blurred or doubled | - |
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| macon | (noun) fine Burgundy wine usually white and dry | Synonyms: maconnais |
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| maconnais | (noun) fine Burgundy wine usually white and dry | Synonyms: macon |
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| macrame | (noun) a relatively coarse lace; made by weaving and knotting cords | - |
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| macrencephaly | (noun) an abnormally large braincase | - |
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| macro | (noun) a single computer instruction that results in a series of instructions in machine language | Synonyms: macro instruction |
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| macrobiotics | (noun) the theory of promoting health and longevity by means of diet (especially whole beans and grains) | - |
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| macrocephaly | (noun) an abnormally large head; differs from hydrocephalus because there is no increased intracranial pressure and the overgrowth is symmetrical | Synonyms: megacephaly, megalocephaly |
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| macrocosm | (noun) everything that exists anywhere | Synonyms: cosmos, creation, existence, universe, world |
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| macrocyte | (noun) abnormally large red blood cell (associated with pernicious anemia) | Synonyms: megalocyte |
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| macrocytosis | (noun) the presence of macrocytes in the blood | - |
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| macroeconomics | (noun) the branch of economics that studies the overall working of a national economy | - |
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| macroeconomist | (noun) an economist who specializes in macroeconomics | Synonyms: macroeconomic expert |
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| macroelement | (noun) a chemical element required in relatively large quantities for the normal physiologic processes of the body. | Synonyms: major mineral |
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| macroevolution | (noun) evolution on a large scale extending over geologic era and resulting in the formation of new taxonomic groups | - |
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| macroglia | (noun) tissue consisting of large stellate neuroglial cells | Synonyms: astroglia |
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| macroglossia | (noun) a congenital disorder characterized by an abnormally large tongue; often seen in cases of Down's syndrome | - |
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| macromolecule | (noun) any very large complex molecule; found only in plants and animals | Synonyms: supermolecule |
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| macron | (noun) a diacritical mark (-) placed above a vowel to indicate a long sound | - |
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| macrophage | (noun) a large phagocyte; some are fixed and other circulate in the blood stream | - |
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| macrosporangium | (noun) a plant structure that produces megaspores | Synonyms: megasporangium |
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| macrospore | (noun) larger of the two types of spore produced in heterosporous plants; develops in ovule into a female gametophyte | Synonyms: megaspore |
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| macrotus | (noun) large-eared greyish bat of southern California and northwestern Mexico | Synonyms: Macrotus californicus |
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| macrozamia | (noun) any treelike cycad of the genus Macrozamia having erect trunks and pinnate leaves and large cones with sometimes edible nuts; Australia | - |
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| macula | (noun) a small yellowish central area of the retina that is rich in cones and that mediates clear detailed vision | Synonyms: macula lutea, macular area, yellow spot |
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| (noun) a patch of skin that is discolored but not usually elevated; caused by various diseases | Synonyms: macule |
| (noun) a cooler darker spot appearing periodically on the sun's photosphere; associated with a strong magnetic field | Synonyms: sunspot |
| maculation | (noun) the act of spotting or staining something | Synonyms: spotting, staining |
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| (noun) a small contrasting part of something | Synonyms: dapple, fleck, patch, speckle, spot |
| macule | (noun) a patch of skin that is discolored but not usually elevated; caused by various diseases | Synonyms: macula |
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| macumba | (noun) a Brazilian religious cult of African origin; combines voodoo elements with singing and chanting and dancing | - |
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| (noun) popular dance music of Brazil; derived from the practices of the macumba religious cult | - |
| (noun) (Brazil) followers of a religious cult of African origin | - |
| macushla | (noun) (an Irish term of address expressing affection) darling | - |
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| monochromacy | (noun) complete color blindness; colors can be differentiated only on the basis of brightness | Synonyms: monochromasy, monochromatic vision, monochromatism, monochromia |
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| nanomachine | (noun) a machine of the size of close to one nanometre | - |
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| naumachia | (noun) a naval spectacle; a mock sea battle put on by the ancient Romans | Synonyms: naumachy |
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| naumachy | (noun) a naval spectacle; a mock sea battle put on by the ancient Romans | Synonyms: naumachia |
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| pharmaceutic | (noun) drug or medicine that is prepared or dispensed in pharmacies and used in medical treatment | Synonyms: pharmaceutical |
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| pharmaceutical | (noun) drug or medicine that is prepared or dispensed in pharmacies and used in medical treatment | Synonyms: pharmaceutic |
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| pharmaceutics | (noun) the art and science of preparing and dispensing drugs and medicines | Synonyms: pharmacy |
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| pharmacist | (noun) a health professional trained in the art of preparing and dispensing drugs | Synonyms: apothecary, chemist, druggist, pill pusher, pill roller |
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| pharmacogenetics | (noun) the branch of genetics that studies the genetically determined variations in responses to drugs in humans or laboratory organisms | - |
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| pharmacokinetics | (noun) the study of the action of drugs in the body: method and rate of excretion, duration of effect, etc. | - |
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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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| pharmacopeia | (noun) (pharmacology) a book containing a compilation of pharmaceutical products with their formulas and methods of preparation | Synonyms: formulary |
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| pharmacopoeia | (noun) a collection or stock of drugs | - |
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| pharmacy | (noun) a retail shop where medicine and other articles are sold | Synonyms: apothecary's shop, chemist's, chemist's shop, drugstore |
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| (noun) the art and science of preparing and dispensing drugs and medicines | Synonyms: pharmaceutics |
| phragmacone | (noun) the thin conical chambered internal shell (either straight or curved) of a belemnite | Synonyms: phragmocone |
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| plasmacyte | (noun) a cell that develops from a B lymphocyte in reaction to a specific antigen; found in bone marrow and sometimes in the blood | Synonyms: plasma cell |
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| plasmacytoma | (noun) neoplasm of plasma cells (usually in bone marrow) | - |
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| primacy | (noun) the state of being first in importance | - |
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| psychomachy | (noun) a conflict of the soul (as with the body or between good and evil). | - |
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| psychopharmacology | (noun) the study of drugs that affect the mind | - |
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