| abetalipoproteinemia | (noun) a rare inherited disorder of fat metabolism; characterized by severe deficiency of beta-lipoproteins and abnormal red blood cells (acanthocytes) and abnormally low cholesterol levels | - |
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| ableism | (noun) discrimination in favor of the able-bodied | Synonyms: able-bodiedism, able-bodism, ablism |
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| abseil | (noun) (mountaineering) a descent of a vertical cliff or wall made by using a doubled rope that is fixed to a higher point and wrapped around the body | Synonyms: rappel |
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| abseiler | (noun) a person who descends down a nearly vertical face by using a doubled rope that is wrapped around the body and attached to some high point | Synonyms: rappeller |
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| absenteeism | (noun) habitual absence from work | - |
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| acmeism | (noun) An early 20th-century Russian school of poetry that rejected the vagueness and emotionality of Symbolism in favor of Imagist clarity and texture. | - |
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| acrolein | (noun) a pungent colorless unsaturated liquid aldehyde made from propene | Synonyms: propenal |
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| ageing | (noun) the organic process of growing older and showing the effects of increasing age | Synonyms: aging, senescence |
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| (noun) acquiring desirable qualities by being left undisturbed for some time | Synonyms: aging, ripening |
| ageism | (noun) discrimination on the basis of a person's age | Synonyms: agism |
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| aniseikonia | (noun) visual defect in which the shape and size of an ocular image differ in the two eyes | - |
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| apartheid | (noun) a social policy or racial segregation involving political and economic and legal discrimination against people who are not Whites; the former official policy in South Africa | - |
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| ateleiosis | (noun) a form of infantilism characterized by physical underdevelopment but normal intelligence | Synonyms: ateliosis |
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| atheism | (noun) a lack of belief in the existence of God or gods | - |
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| atheist | (noun) someone who does not believe in the existence of a god | - |
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| bantamweight | (noun) A weight class division in combat sports, for fighters heavier than those in the flyweight division and lighter than those in the featherweight division. | - |
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| (noun) an amateur boxer who weighs no more than 119 pounds | - |
| (noun) weighs 115-126 pounds | - |
| beige | (noun) a very light brown | Synonyms: ecru |
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| beigel | (noun) (Yiddish) glazed yeast-raised doughnut-shaped roll with hard crust | Synonyms: bagel |
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| beignet | (noun) a deep-fried, yeast-raised doughnut dusted with confectioners' sugar | Synonyms: French fritter |
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| being | (noun) a living thing that has (or can develop) the ability to act or function independently | Synonyms: organism |
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| (noun) the state or fact of existing | Synonyms: beingness, existence, face of the earth |
| beingness | (noun) the state or fact of existing | Synonyms: being, existence, face of the earth |
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| blueing | (noun) a process that makes something blue (or bluish) | Synonyms: bluing |
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| (noun) used to whiten laundry or hair or give it a bluish tinge | Synonyms: blue, bluing |
| bobsleigh | (noun) a long racing sled (for 2 or more people) with a steering mechanism | Synonyms: bob, bobsled |
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| (noun) formerly two short sleds coupled together | Synonyms: bobsled |
| buddleia | (noun) tropical shrub having clusters of white or violet or yellow flowers | Synonyms: butterfly bush |
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| caffein | (noun) a bitter alkaloid found in coffee and tea that is responsible for their stimulating effects | Synonyms: caffeine |
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| caffeine | (noun) a bitter alkaloid found in coffee and tea that is responsible for their stimulating effects | Synonyms: caffein |
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| caffeinism | (noun) poisoning resulting from excessive intake of caffeine containing products | Synonyms: caffeine intoxication |
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| canoeist | (noun) someone paddling a canoe | Synonyms: paddler |
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| casein | (noun) a water-base paint made with a protein precipitated from milk | Synonyms: casein paint |
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| (noun) a milk protein used in making e.g. plastics and adhesives | - |
| ceibo | (noun) small South American spiny tree with dark crimson and scarlet flowers solitary or clustered | Synonyms: common coral tree, cry-baby tree, crybaby tree, Erythrina crista-galli |
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| ceilidh | (noun) an informal social gathering at which there is Scottish or Irish folk music and singing and folk dancing and story telling | - |
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| ceiling | (noun) the overhead upper surface of a covered space | - |
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| (noun) (meteorology) altitude of the lowest layer of clouds | - |
| (noun) maximum altitude at which a plane can fly (under specified conditions) | - |
| (noun) an upper limit on what is allowed | Synonyms: cap, roof |
| checkrein | (noun) a rein designed to keep the horse's head in the desired position | Synonyms: bearing rein |
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| cheilitis | (noun) inflammation and cracking of the skin of the lips | - |
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| cheiloschisis | (noun) a congenital cleft in the middle of the upper lip | Synonyms: cleft lip, harelip |
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| cheiloscopy | (noun) a forensic investigation technique that deals with identification of humans based on lip traces. | - |
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| cheilosis | (noun) a disorder of the lips marked by scaling and fissures at the corners of the mouth; caused by a deficiency of riboflavin | Synonyms: perleche |
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| cleistocarp | (noun) closed spore-bearing structure of some fungi (especially Aspergillaceae and Erysiphaceae) from which spores are released only by decay or disintegration | Synonyms: cleistothecium |
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| cleistogamy | (noun) the production of small nonopening self-pollinating flowers | - |
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| 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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| clupeid | (noun) any of numerous soft-finned schooling food fishes of shallow waters of northern seas | Synonyms: clupeid fish |
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| codeine | (noun) derivative of opium; used as an antitussive (to relieve coughing) and an analgesic (to relieve pain) | - |
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| conceit | (noun) the trait of being unduly vain and conceited; false pride | Synonyms: conceitedness, vanity |
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| (noun) a witty or ingenious turn of phrase | - |
| (noun) an artistic device or effect | - |
| (noun) an elaborate poetic image or a far-fetched comparison of very dissimilar things | - |
| (noun) feelings of excessive pride | Synonyms: amour propre, self-love, vanity |
| conceitedness | (noun) the trait of being unduly vain and conceited; false pride | Synonyms: conceit, vanity |
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| conceivability | (noun) the state of being conceivable | Synonyms: conceivableness |
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| conceivableness | (noun) the state of being conceivable | Synonyms: conceivability |
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| conceiver | (noun) someone who creates new things | Synonyms: mastermind, originator |
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| contemporaneity | (noun) the quality of being current or of the present | Synonyms: contemporaneousness, modernism, modernity, modernness |
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| (noun) the quality of belonging to the same period of time | Synonyms: contemporaneousness |
| coreid | (noun) a true bug | Synonyms: coreid bug |
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| counterfeit | (noun) a copy that is represented as the original | Synonyms: forgery |
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| counterfeiter | (noun) someone who makes copies illegally | Synonyms: forger |
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| counterweight | (noun) a weight that balances another weight | Synonyms: balance, counterbalance, counterpoise, equaliser, equalizer |
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| cruiserweight | (noun) A weight class division in combat sports, for fighters heavier than those in the middleweight division and lighter than those in the super heavyweight division. | Synonyms: light heavyweight |
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| (noun) a professional boxer who weighs between 169 and 175 pounds | Synonyms: light heavyweight |
| cuneiform | (noun) an ancient wedge-shaped script used in Mesopotamia and Persia | - |
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| cysteine | (noun) an amino acid containing sulfur that is found in most proteins; oxidizes on exposure to air to form cystine | - |
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| deceit | (noun) the act of deceiving | Synonyms: deception, dissembling, dissimulation |
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| (noun) the quality of being fraudulent | Synonyms: fraudulence |
| (noun) a misleading falsehood | Synonyms: deception, misrepresentation |
| deceitfulness | (noun) the quality of being deceitful | - |
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| deceiver | (noun) someone who leads you to believe something that is not true | Synonyms: beguiler, cheat, cheater, slicker, trickster |
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| deicer | (noun) heater that removes ice or frost (as from a windshield or a refrigerator or the wings of an airplane) | Synonyms: defroster |
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| deictic | (noun) a word specifying identity or spatial or temporal location from the perspective of a speaker or hearer in the context in which the communication occurs | Synonyms: deictic word |
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| deification | (noun) the elevation of a person (as to the status of a god) | Synonyms: apotheosis, exaltation |
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| (noun) an embodiment of the qualities of a god | - |
| (noun) the condition of being treated like a god | - |
| deinocheirus | (noun) lightly built medium-sized theropod with long limbs and neck | - |
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| deinonychus | (noun) swift agile wolf-sized bipedal dinosaur having a large curved claw on each hind foot; of the Cretaceous | - |
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| deipnosophist | (noun) someone skilled at informal chitchat | - |
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| deism | (noun) the form of theological rationalism that believes in God on the basis of reason without reference to revelation | Synonyms: free thought |
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| deist | (noun) a person who believes that God created the universe and then abandoned it | - |
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| deity | (noun) any supernatural being worshipped as controlling some part of the world or some aspect of life or who is the personification of a force | Synonyms: divinity, god, immortal |
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| deixis | (noun) the function of pointing or specifying from the perspective of a participant in an act of speech or writing; aspects of a communication whose interpretation depends on knowledge of the context in which the communication occurs | - |
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| dyeing | (noun) the use of dye to change the color of something permanently | - |
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| edelweiss | (noun) alpine perennial plant native to Europe having leaves covered with whitish down and small flower heads held in stars of glistening whitish bracts | Synonyms: Leontopodium alpinum |
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| eider | (noun) duck of the Northern Hemisphere much valued for the fine soft down of the females | Synonyms: eider duck |
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| eiderdown | (noun) down of the eider duck | - |
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| (noun) a soft quilt usually filled with the down of the eider | Synonyms: continental quilt, duvet |
| eidos | (noun) (anthropology) the distinctive expression of the cognitive or intellectual character of a culture or a social group | - |
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| eigenvalue | (noun) (mathematics) any number such that a given square matrix minus that number times the identity matrix has a zero determinant | Synonyms: characteristic root of a square matrix, eigenvalue of a matrix, eigenvalue of a square matrix |
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| eight | (noun) one of four playing cards in a deck with eight pips on the face | Synonyms: eight-spot |
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| (noun) the cardinal number that is the sum of seven and one | Synonyms: 8, eighter, eighter from Decatur, octad, octet, octonary, ogdoad, VIII |
| eighteen | (noun) the cardinal number that is the sum of seventeen and one | Synonyms: 18, XVIII |
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| eighteenth | (noun) position 18 in a countable series of things | - |
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| eighter | (noun) the cardinal number that is the sum of seven and one | Synonyms: 8, eight, eighter from Decatur, octad, octet, octonary, ogdoad, VIII |
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| eighth | (noun) one part in eight equal parts | Synonyms: one-eighth |
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| (noun) position eight in a countable series of things | - |
| eighties | (noun) the time of life between 80 and 90 | Synonyms: mid-eighties |
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| (noun) the decade from 1980 to 1989 | Synonyms: 1980s |
| (noun) the decade from 1880 to 1889 | Synonyms: 1880s |
| eightieth | (noun) position 80 in a countable series of things | - |
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| eightpence | (noun) a coin worth eight pennies | - |
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| eightsome | (noun) a Scottish reel for eight dancers | - |
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| (noun) eight people considered as a unit | Synonyms: octet, octette |
| eightvo | (noun) the size of a book whose pages are made by folding a sheet of paper three times to form eight leaves | Synonyms: 8vo, octavo |
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| eighty | (noun) the cardinal number that is the product of ten and eight | Synonyms: 80, fourscore, LXXX |
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| eimeria | (noun) parasitic on the digestive epithelium of vertebrates and higher invertebrates | Synonyms: coccidium |
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| einsteinium | (noun) a radioactive transuranic element produced by bombarding plutonium with neutrons | Synonyms: atomic number 99, E, Es |
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| eisegesis | (noun) personal interpretation of a text (especially of the Bible) using your own ideas | - |
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| eisteddfod | (noun) any of several annual Welsh festivals involving artistic competitions (especially in singing) | - |
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| ephebeia | (noun) in ancient Greece, a state institution organized to train freeborn youths between the ages of 18 and 20 for military and administrative service. | - |
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| epicheirema | (noun) a syllogism in which some statement supporting one or both of the premises is introduced with the premises themselves. | - |
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| extraneity | (noun) The state of not forming an essential or vital part. | Synonyms: extraneousness |
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| featherweight | (noun) A weight class division in combat sports, for fighters heavier than those in the bantamweight division and lighter than those in the lightweight division. | - |
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| (noun) a professional boxer who weighs between 123 and 126 pounds | - |
| (noun) weighs 126-139 pounds | - |
| (noun) an amateur boxer who weighs no more than 126 pounds | - |
| feigning | (noun) the act of giving a false appearance | Synonyms: pretence, pretending, pretense, simulation |
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| (noun) pretending with intention to deceive | Synonyms: dissembling, pretence, pretense |
| feijoa | (noun) dark-green kiwi-sized tropical fruit with white flesh; used chiefly for jellies and preserves | Synonyms: pineapple guava |
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| (noun) South American shrub having edible greenish plumlike fruit | Synonyms: feijoa bush |
| feint | (noun) any distracting or deceptive maneuver (as a mock attack) | - |
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| feist | (noun) a nervous belligerent little mongrel dog | Synonyms: fice |
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| feistiness | (noun) The quality or state of being tenacious, energetic, spunky. | Synonyms: scrappiness |
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| fetoprotein | (noun) any of several antigens that occur naturally in the fetus and sometimes in adults with cancer | Synonyms: foetoprotein |
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| fluorescein | (noun) a yellow dye that is visible even when highly diluted; used as an absorption indicator when silver nitrate solution is added to sodium chloride in order to precipitate silver chloride (turns pink when no chloride ions are left in solution and negative fluorescein ions are then absorbed) | Synonyms: fluoresceine, fluorescent dye, resorcinolphthalein |
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| fluoresceine | (noun) a yellow dye that is visible even when highly diluted; used as an absorption indicator when silver nitrate solution is added to sodium chloride in order to precipitate silver chloride (turns pink when no chloride ions are left in solution and negative fluorescein ions are then absorbed) | Synonyms: fluorescein, fluorescent dye, resorcinolphthalein |
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