| cryometer | (noun) a thermometer designed to measure low temperatures | - |
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| culteranismo | (noun) an esoteric style of writing that attempted to elevate poetic language and themes by re-Latinizing them, using classical allusions, vocabulary, syntax, and word order. | Synonyms: Gongorismo |
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| cutter | (noun) a cutting implement; a tool for cutting | Synonyms: cutlery, cutting tool |
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| (noun) a boat for communication between ship and shore | Synonyms: pinnace, ship's boat, tender |
| (noun) a sailing vessel with a single mast set further back than the mast of a sloop | - |
| (noun) someone whose work is cutting (as e.g. cutting cloth for garments) | - |
| (noun) someone who carves the meat | Synonyms: carver |
| (noun) someone who cuts or carves stone | Synonyms: stonecutter |
| cyanobacteria | (noun) predominantly photosynthetic prokaryotic organisms containing a blue pigment in addition to chlorophyll; occur singly or in colonies in diverse habitats; important as phytoplankton | Synonyms: blue-green algae |
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| cytophotometer | (noun) a photometer that can be used to locate and identify chemical compounds in a cell by measuring the intensity of the light that passes through stained sections of the cytoplasm | - |
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| darter | (noun) a person or other animal that moves abruptly and rapidly | - |
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| (noun) fish-eating bird of warm inland waters having a long flexible neck and slender sharp-pointed bill | Synonyms: anhinga, snakebird |
| dasymeter | (noun) densimeter consisting of a thin glass globe that is weighed in a gas to determine its density | - |
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| daughter | (noun) a female human offspring | Synonyms: girl |
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| debater | (noun) someone who engages in debate | Synonyms: arguer |
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| decaliter | (noun) a metric unit of volume or capacity equal to 10 liters | Synonyms: dal, decalitre, dekaliter, dekalitre, dkl |
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| decameter | (noun) a metric unit of length equal to ten meters | Synonyms: dam, decametre, dekameter, dekametre, dkm |
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| decanter | (noun) a bottle with a stopper; for serving wine or water | Synonyms: carafe |
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| decentering | (noun) Jean Piaget's theory of cognitive development where a child slowly moves away from an egocentric world to a world shared with others. | Synonyms: decentration |
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| deciliter | (noun) a metric unit of volume equal to one tenth of a liter | Synonyms: decilitre, dl |
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| decimeter | (noun) a metric unit of length equal to one tenth of a meter | Synonyms: decimetre, dm |
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| declinometer | (noun) an instrument for measuring magnetic declination | Synonyms: transit declinometer |
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| defaulter | (noun) a contestant who forfeits a match | - |
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| (noun) someone who fails to meet a financial obligation | Synonyms: deadbeat |
| (noun) someone who fails to make a required appearance in court | - |
| defroster | (noun) heater that removes ice or frost (as from a windshield or a refrigerator or the wings of an airplane) | Synonyms: deicer |
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| dekaliter | (noun) a metric unit of volume or capacity equal to 10 liters | Synonyms: dal, decaliter, decalitre, dekalitre, dkl |
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| dekameter | (noun) a metric unit of length equal to ten meters | Synonyms: dam, decameter, decametre, dekametre, dkm |
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| demister | (noun) heater that removes mist from the windshield of a car | - |
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| densimeter | (noun) a measuring instrument for determining density or specific gravity | Synonyms: densitometer |
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| densitometer | (noun) a measuring instrument for determining optical or photographic density | - |
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| (noun) a measuring instrument for determining density or specific gravity | Synonyms: densimeter |
| departer | (noun) someone who leaves | Synonyms: goer, leaver |
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| deserter | (noun) a person who abandons their duty (as on a military post) | Synonyms: defector |
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| (noun) a disloyal person who betrays or deserts his cause or religion or political party or friend etc. | Synonyms: apostate, ratter, recreant, renegade, turncoat |
| detergence | (noun) detergent quality; the quality of having cleansing power | Synonyms: detergency |
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| detergency | (noun) detergent quality; the quality of having cleansing power | Synonyms: detergence |
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| detergent | (noun) a cleansing agent that differs from soap but can also emulsify oils and hold dirt in suspension | - |
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| (noun) a surface-active chemical widely used in industry and laundering | - |
| deterioration | (noun) process of changing to an inferior state | Synonyms: declension, decline in quality, worsening |
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| (noun) a symptom of reduced quality or strength | Synonyms: impairment |
| determent | (noun) a communication that makes you afraid to try something | Synonyms: deterrence, intimidation |
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| determinant | (noun) a determining or causal element or factor | Synonyms: causal factor, determinative, determiner, determining factor |
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| (noun) a square matrix used to solve simultaneous equations | - |
| (noun) the site on the surface of an antigen molecule to which an antibody attaches itself | Synonyms: antigenic determinant, epitope |
| determinateness | (noun) the quality of being predictable with great confidence | Synonyms: definiteness |
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| determination | (noun) the act of determining the properties of something, usually by research or calculation | Synonyms: finding |
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| (noun) the act of making up your mind about something | Synonyms: conclusion, decision |
| (noun) the quality of being determined to do or achieve something; firmness of purpose | Synonyms: purpose |
| (noun) a position or opinion or judgment reached after consideration | Synonyms: conclusion, decision |
| (noun) deciding or controlling something's outcome or nature | - |
| determinative | (noun) a determining or causal element or factor | Synonyms: causal factor, determinant, determiner, determining factor |
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| (noun) one of a limited class of noun modifiers that determine the referents of noun phrases | Synonyms: determiner |
| determiner | (noun) a determining or causal element or factor | Synonyms: causal factor, determinant, determinative, determining factor |
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| (noun) one of a limited class of noun modifiers that determine the referents of noun phrases | Synonyms: determinative |
| (noun) an argument that is conclusive | Synonyms: clincher, determining factor |
| determinism | (noun) (philosophy) a philosophical theory holding that all events are inevitable consequences of antecedent sufficient causes; often understood as denying the possibility of free will | - |
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| determinist | (noun) anyone who submits to the belief that they are powerless to change their destiny | Synonyms: fatalist, predestinarian, predestinationist |
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| deterrence | (noun) the act or process of discouraging actions or preventing occurrences by instilling fear or doubt or anxiety | - |
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| (noun) a communication that makes you afraid to try something | Synonyms: determent, intimidation |
| (noun) a negative motivational influence | Synonyms: disincentive |
| deterrent | (noun) something immaterial that interferes with or delays action or progress | Synonyms: balk, baulk, check, handicap, hinderance, hindrance, impediment |
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| deuteranopia | (noun) dichromacy characterized by a lowered sensitivity to green light resulting in an inability to distinguish green and purplish-red | Synonyms: Daltonism, green-blindness |
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| deuterium | (noun) an isotope of hydrogen which has one neutron (as opposed to zero neutrons in hydrogen) | Synonyms: heavy hydrogen |
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| deuteron | (noun) the nucleus of deuterium; consists of one proton and one neutron; used as a bombarding particle in accelerators | - |
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| dexterity | (noun) adroitness in using the hands | Synonyms: manual dexterity, sleight |
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| diameter | (noun) the length of a straight line passing through the center of a circle and connecting two points on the circumference | Synonyms: diam |
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| (noun) a straight line connecting the center of a circle with two points on its perimeter (or the center of a sphere with two points on its surface) | - |
| dieter | (noun) a person who diets | - |
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| diethylstilbesterol | (noun) synthetic nonsteroid with the properties of estrogen; formerly used to treat menstrual problems but was found to be associated with vaginal cancers in the daughters of women so treated during pregnancy | Synonyms: DES, stilbesterol |
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| digester | (noun) autoclave consisting of a vessel in which plant or animal materials are digested | - |
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| dilater | (noun) a surgical instrument that is used to dilate or distend an opening or an organ | Synonyms: dilator |
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| diopter | (noun) a unit of measurement of the refractive power of a lens which is equal to the reciprocal of the focal length measured in meters; used by oculists | Synonyms: dioptre |
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| dipteran | (noun) insects having usually a single pair of functional wings (anterior pair) with the posterior pair reduced to small knobbed structures and mouth parts adapted for sucking or lapping or piercing | Synonyms: dipteron, dipterous insect, two-winged insects |
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| dipterocarp | (noun) tree of the family Dipterocarpaceae | - |
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| dipteron | (noun) insects having usually a single pair of functional wings (anterior pair) with the posterior pair reduced to small knobbed structures and mouth parts adapted for sucking or lapping or piercing | Synonyms: dipteran, dipterous insect, two-winged insects |
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| disaster | (noun) an act that has disastrous consequences | - |
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| (noun) an event resulting in great loss and misfortune | Synonyms: calamity, cataclysm, catastrophe, tragedy |
| (noun) a state of extreme (usually irremediable) ruin and misfortune | Synonyms: catastrophe |
| discounter | (noun) a sales outlet offering goods at a discounted price | Synonyms: discount house, discount store, wholesale house |
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| dishwater | (noun) water in which dishes and cooking utensils are washed | - |
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| disinterest | (noun) tolerance attributable to a lack of involvement | Synonyms: neutrality |
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| (noun) lack of interest | - |
| disinterestedness | (noun) freedom from bias or from selfish motives | - |
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| disinterment | (noun) the act of digging something up out of the ground (especially a corpse) where it has been buried | Synonyms: digging up, exhumation |
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| dissenter | (noun) a person who dissents from some established policy | Synonyms: contestant, dissident, objector, protester |
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| distributer | (noun) electrical device that distributes voltage to the spark plugs of a gasoline engine in the order of the firing sequence | Synonyms: distributor, electrical distributor |
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| (noun) someone who markets merchandise | Synonyms: distributor |
| dogfighter | (noun) a fighter pilot who engages in an aerial dogfights | - |
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| dosemeter | (noun) a measuring instrument for measuring doses of ionizing radiation (X-rays or radioactivity) | Synonyms: dosimeter |
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| dosimeter | (noun) a measuring instrument for measuring doses of ionizing radiation (X-rays or radioactivity) | Synonyms: dosemeter |
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| dotterel | (noun) rare plover of upland areas of Eurasia | Synonyms: Charadrius morinellus, dotrel, Eudromias morinellus |
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| doubter | (noun) someone who habitually doubts accepted beliefs | Synonyms: sceptic, skeptic |
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| (noun) someone who is doubtful or noncommittal about something | Synonyms: agnostic |
| drafter | (noun) a writer of a draft | - |
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| drifter | (noun) a wanderer who has no established residence or visible means of support | Synonyms: clochard, floater, vagabond, vagrant |
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| drumbeater | (noun) a fervent and even militant proponent of something | Synonyms: partisan, zealot |
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| dumbwaiter | (noun) a small elevator used to convey food (or other goods) from one floor of a building to another | Synonyms: food elevator |
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| durometer | (noun) An instrument for measuring the degree of hardness; especially, an instrument for testing the relative hardness of steel rails and the like. | - |
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| duster | (noun) a pitch thrown deliberately close to the batter | - |
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| (noun) a loose coverall (coat or frock) reaching down to the ankles | Synonyms: dust coat, gabardine, gaberdine, smock |
| (noun) a piece of cloth used for dusting | Synonyms: dustcloth, dustrag |
| (noun) a windstorm that lifts up clouds of dust or sand | Synonyms: dust storm, sandstorm, sirocco |
| dynamiter | (noun) a person who uses dynamite in a revolutionary cause | Synonyms: dynamitist |
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| dynamometer | (noun) measuring instrument designed to measure power | Synonyms: ergometer |
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| dysentery | (noun) an infection of the intestines marked by severe diarrhea | - |
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| easter | (noun) a wind from the east | Synonyms: east wind, easterly |
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| easterly | (noun) a wind from the east | Synonyms: east wind, easter |
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| easterner | (noun) an inhabitant of an eastern area; especially of the U.S. | - |
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| eater | (noun) any green goods that are good to eat | - |
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| (noun) someone who consumes food for nourishment | Synonyms: feeder |
| eatery | (noun) a building where people go to eat | Synonyms: eating house, eating place, restaurant |
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| ecdysteroid | (noun) #DD: The name 'ecdysteroid' refers to the insect moulting and sex hormones which include ecdysone and its homologues such as 20-hydroxyecdysone. | - |
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| ecoterrorism | (noun) violence carried out to further the political or social objectives of the environmentalists | Synonyms: eco-warfare, ecological terrorism, ecological warfare |
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| effecter | (noun) one who brings about a result or event; one who accomplishes a purpose | Synonyms: effector |
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| effrontery | (noun) audacious (even arrogant) behavior that you have no right to | Synonyms: assumption, presumption, presumptuousness |
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| eggbeater | (noun) a mixer for beating eggs or whipping cream | Synonyms: eggwhisk |
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| (noun) an aircraft without wings that obtains its lift from the rotation of overhead blades | Synonyms: chopper, helicopter, whirlybird |
| 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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| elater | (noun) any of various widely distributed beetles | Synonyms: elaterid, elaterid beetle |
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| elaterid | (noun) any of various widely distributed beetles | Synonyms: elater, elaterid beetle |
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| electrocautery | (noun) application of a needle heated by an electric current to destroy tissue (as to remove warts) | - |
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| electrodynamometer | (noun) measuring instrument that uses the interaction of the magnetic fields of two coils to measure current or voltage or power | - |
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| electrometer | (noun) meter to measure electrostatic voltage differences; draws no current from the source | - |
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| electroplater | (noun) a plater who uses electrolysis | - |
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| embitterment | (noun) the state of being embittered | - |
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| emitter | (noun) the electrode in a transistor where electrons originate | - |
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| enchanter | (noun) a sorcerer or magician | - |
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| encounter | (noun) a minor short-term fight | Synonyms: brush, clash, skirmish |
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| (noun) a casual meeting with a person or thing | Synonyms: coming upon |
| (noun) a hostile disagreement face-to-face | Synonyms: confrontation, face-off, showdown |
| (noun) a casual or unexpected convergence | Synonyms: meeting |
| endarterectomy | (noun) surgical removal of the inner lining of an artery that is clogged with atherosclerosis | - |
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| endarteritis | (noun) inflammation of the inner lining of an artery | - |
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| enterics | (noun) rod-shaped Gram-negative bacteria; most occur normally or pathogenically in intestines of humans and other animals | Synonyms: enteric bacteria, enterobacteria, entric |
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| entering | (noun) the act of entering | Synonyms: entrance, entry, incoming, ingress |
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| (noun) a movement into or inward | Synonyms: entrance |
| enteritis | (noun) inflammation of the intestine (especially the small intestine); usually characterized by diarrhea | - |
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