| acroanesthesia | (noun) loss of sensation in the extremities | Synonyms: acroanaesthesia |
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| aeroplane | (noun) an aircraft that has a fixed wing and is powered by propellers or jets | Synonyms: airplane, plane |
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| airplane | (noun) an aircraft that has a fixed wing and is powered by propellers or jets | Synonyms: aeroplane, plane |
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| alkane | (noun) a series of non-aromatic saturated hydrocarbons with the general formula CnH(2n+2) | Synonyms: alkane series, methane series, paraffin, paraffin series |
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| alkanet | (noun) perennial or biennial herb cultivated for its delicate usually blue flowers | Synonyms: Anchusa officinalis, bugloss |
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| aminoalkane | (noun) a compound derived from ammonia by replacing hydrogen atoms by univalent hydrocarbon radicals | Synonyms: amine |
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| aminomethane | (noun) a methyl with the hydrogen atom replaced by an amino radical | - |
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| anecdotalism | (noun) The property of being related to short accounts of real incidents or persons, often humorous or interesting. | - |
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| anecdote | (noun) short account of an incident (especially a biographical one) | - |
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| anecdotist | (noun) a person skilled in telling anecdotes | Synonyms: raconteur |
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| anemia | (noun) a deficiency of red blood cells | Synonyms: anaemia |
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| (noun) a lack of vitality | Synonyms: anaemia |
| anemoclinometer | (noun) A type of instrument which measures the inclination of the wind to the horizontal plane. | - |
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| anemograph | (noun) An instrument which records wind velocities. | - |
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| anemography | (noun) recording anemometrical measurements | - |
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| anemometer | (noun) a gauge for recording the speed and direction of wind | Synonyms: wind gage, wind gauge |
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| anemometry | (noun) measuring wind speed and direction | - |
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| anemone | (noun) marine polyps that resemble flowers but have oral rings of tentacles; differ from corals in forming no hard skeleton | Synonyms: sea anemone |
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| (noun) any woodland plant of the genus Anemone grown for its beautiful flowers and whorls of dissected leaves | Synonyms: windflower |
| anencephalia | (noun) a defect in brain development resulting in small or missing brain hemispheres | Synonyms: anencephaly |
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| anencephaly | (noun) a defect in brain development resulting in small or missing brain hemispheres | Synonyms: anencephalia |
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| anergy | (noun) reduction or lack of an immune response to a specific antigen | - |
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| (noun) inactivity and lack of energy | - |
| aneroid | (noun) a barometer that measures pressure without using fluids | Synonyms: aneroid barometer |
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| anesthesia | (noun) loss of bodily sensation with or without loss of consciousness | Synonyms: anaesthesia |
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| anesthesiologist | (noun) a specialist who administers an anesthetic to a patient before he is treated | Synonyms: anaesthetist, anesthetist |
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| anesthesiology | (noun) the branch of medical science that studies and applies anesthetics | - |
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| anesthetic | (noun) a drug that causes temporary loss of bodily sensations | Synonyms: anaesthetic, anaesthetic agent, anesthetic agent |
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| anesthetist | (noun) a specialist who administers an anesthetic to a patient before he is treated | Synonyms: anaesthetist, anesthesiologist |
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| anesthyl | (noun) a mixture of methyl and ethyl chloride; sprayed on as a local anesthetic | - |
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| anestrum | (noun) applies to nonhuman mammals: a state or interval of sexual inactivity between two periods of estrus | Synonyms: anestrus, anoestrum, anoestrus |
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| anestrus | (noun) applies to nonhuman mammals: a state or interval of sexual inactivity between two periods of estrus | Synonyms: anestrum, anoestrum, anoestrus |
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| anethole | (noun) an organic compound that is widely used as a flavoring substance. | Synonyms: anise camphor |
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| aneuploidy | (noun) an abnormality involving a chromosome number that is not an exact multiple of the haploid number (one chromosome set is incomplete) | - |
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| aneurin | (noun) a B vitamin that prevents beriberi; maintains appetite and growth | Synonyms: antiberiberi factor, thiamin, thiamine, vitamin B1 |
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| aneurism | (noun) a cardiovascular disease characterized by a saclike widening of an artery resulting from weakening of the artery wall | Synonyms: aneurysm |
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| aneurysm | (noun) a cardiovascular disease characterized by a saclike widening of an artery resulting from weakening of the artery wall | Synonyms: aneurism |
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| aquaplane | (noun) a board that is pulled by a speedboat as a person stands on it and skims over the top of the water | - |
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| balletomane | (noun) a ballet enthusiast | - |
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| bane | (noun) something causing misery or death | Synonyms: curse, nemesis, scourge |
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| baneberry | (noun) a plant of the genus Actaea having acrid poisonous berries | Synonyms: cohosh, herb Christopher |
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| (noun) a poisonous berry of a plant of the genus Actaea | - |
| beaner | (noun) a baseball deliberately thrown at the batter's head | Synonyms: beanball |
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| biplane | (noun) old fashioned airplane; has two wings one above the other | - |
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| buccaneer | (noun) someone who robs at sea or plunders the land from the sea without having a commission from any sovereign nation | Synonyms: pirate, sea robber, sea rover |
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| buccaneering | (noun) hijacking on the high seas or in similar contexts; taking a ship or plane away from the control of those who are legally entitled to it | Synonyms: piracy |
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| bugbane | (noun) a plant of the genus Cimicifuga having flowers in long racemes or panicles reported to be distasteful to insects | - |
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| (noun) North American plant having large leaves and yellowish green flowers growing in racemes; yields a toxic alkaloid used medicinally | Synonyms: American hellebore, Indian poke, Veratrum viride, white hellebore |
| butane | (noun) occurs in natural gas; used in the manufacture of rubber and fuels | - |
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| calcaneus | (noun) the largest tarsal bone; forms the human heel | Synonyms: heelbone, os tarsi fibulare |
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| cane | (noun) a stiff switch, used to hit (usually students) as punishment | - |
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| (noun) a stick that people can lean on to help them walk | - |
| (noun) a strong slender often flexible stem as of bamboos, reeds, rattans, or sugar cane | - |
| canebrake | (noun) a dense growth of cane (especially giant cane) | - |
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| canecutter | (noun) a wood rabbit of southeastern United States swamps and lowlands | Synonyms: swamp hare, swamp rabbit, Sylvilagus aquaticus |
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| canella | (noun) highly aromatic inner bark of the Canella winterana used as a condiment and a tonic | Synonyms: canella bark, white cinnamon |
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| castanets | (noun) (used in the plural) a percussion instrument consisting of a pair of hollow pieces of wood or bone (usually held between the thumb and fingers) that are made to click together (as by Spanish dancers) in rhythm with the dance | Synonyms: bones, clappers, finger cymbals |
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| cellophane | (noun) a transparent paperlike product that is impervious to moisture and used to wrap candy or cigarettes etc. | - |
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| chicane | (noun) the use of tricks to deceive someone (usually to extract money from them) | Synonyms: chicanery, guile, shenanigan, trickery, wile |
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| (noun) a movable barrier used in motor racing; sometimes placed before a dangerous corner to reduce speed as cars pass in single file | - |
| (noun) a bridge hand that is void of trumps | - |
| chicanery | (noun) the use of tricks to deceive someone (usually to extract money from them) | Synonyms: chicane, guile, shenanigan, trickery, wile |
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| cleaner | (noun) a preparation used in cleaning something | Synonyms: cleanser, cleansing agent |
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| (noun) someone whose occupation is cleaning | - |
| (noun) the operator of dry-cleaning establishment | Synonyms: dry cleaner |
| cleaners | (noun) shop where dry cleaning is done | Synonyms: dry cleaners |
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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 |
| contemporaneousness | (noun) the quality of being current or of the present | Synonyms: contemporaneity, modernism, modernity, modernness |
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| (noun) the quality of belonging to the same period of time | Synonyms: contemporaneity |
| counterpane | (noun) decorative cover for a bed | Synonyms: bed cover, bed covering, bedcover, bedspread, spread |
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| crane | (noun) large long-necked wading bird of marshes and plains in many parts of the world | - |
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| (noun) lifts and moves heavy objects; lifting tackle is suspended from a pivoted boom that rotates around a vertical axis | - |
| cranesbill | (noun) any of numerous geraniums of the genus Geranium | Synonyms: crane's bill |
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| cryoanesthesia | (noun) insensibility resulting from cold | Synonyms: cryoanaesthesia |
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| cyclopropane | (noun) a colorless flammable gas sometimes used as an inhalation anesthetic | - |
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| cytomembrane | (noun) a thin membrane (a double layer of lipids) enclosing the cytoplasm of a cell; proteins in the membrane control passage of ions (like sodium or potassium or calcium) in and out of the cell | Synonyms: cell membrane, plasma membrane |
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| danewort | (noun) dwarf herbaceous elder of Europe having pink flowers and a nauseous odor | Synonyms: dwarf elder, Sambucus ebulus |
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| deanery | (noun) the position or office of a dean | Synonyms: deanship |
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| (noun) the official residence of a dean | - |
| dichlorodiphenyltrichloroethane | (noun) an insecticide that is also toxic to animals and humans; banned in the United States since 1972 | Synonyms: DDT |
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| dichloromethane | (noun) a nonflammable liquid used as a solvent and paint remover and refrigerant | Synonyms: methylene chloride |
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| dogbane | (noun) any of several poisonous perennial plants of the genus Apocynum having acrid milky juice and bell-shaped white or pink flowers and a very bitter root | - |
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| elecampane | (noun) tall coarse Eurasian herb having daisylike yellow flowers with narrow petals whose rhizomatous roots are used medicinally | Synonyms: Inula helenium |
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| enflurane | (noun) a nonflammable liquid (trade name Ethrane) used as an inhalation general anesthetic | Synonyms: Ethrane |
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| etanercept | (noun) a genetically engineered anti-TNF compound (trade name Enbrel) consisting of receptors that bind TNF; it is injected twice a week in the treatment of rheumatoid arthritis | Synonyms: Enbrel |
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| ethane | (noun) a colorless odorless alkane gas used as fuel | Synonyms: C2H6 |
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| ethanediol | (noun) a sweet but poisonous syrupy liquid used as an antifreeze and solvent | Synonyms: ethylene glycol, glycol |
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| ethoxyethane | (noun) a colorless volatile highly flammable liquid formerly used as an inhalation anesthetic | Synonyms: diethyl ether, divinyl ether, ether, ethyl ether, vinyl ether |
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| evanescence | (noun) the event of fading and gradually vanishing from sight | - |
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| exoplanet | (noun) A planet which exists outside Earth's solar system | - |
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| extraneity | (noun) The state of not forming an essential or vital part. | Synonyms: extraneousness |
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| extraneousness | (noun) The state of not forming an essential or vital part. | Synonyms: extraneity |
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| (noun) unrelatedness by virtue of falling outside the matter at hand | - |
| fleabane | (noun) hairy perennial Eurasian herb with yellow daisylike flowers reputed to destroy or drive away fleas | Synonyms: feabane mullet, Pulicaria dysenterica |
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| (noun) any of several North American plants of the genus Erigeron having daisylike flowers; formerly believed to repel fleas | - |
| (noun) common North American weed with linear leaves and small discoid heads of yellowish flowers; widely naturalized throughout temperate regions; sometimes placed in genus Erigeron | Synonyms: Canadian fleabane, Conyza canadensis, Erigeron canadensis, horseweed |
| floatplane | (noun) a seaplane equipped with pontoons for landing or taking off from water | Synonyms: pontoon plane |
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| fontanel | (noun) any membranous gap between the bones of the cranium in an infant or fetus | Synonyms: fontanelle, soft spot |
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| fontanelle | (noun) any membranous gap between the bones of the cranium in an infant or fetus | Synonyms: fontanel, soft spot |
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| frangipane | (noun) pastry with a creamy almond-flavored filling | - |
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| furane | (noun) a colorless toxic flammable liquid used in the synthesis of nylon | Synonyms: furan, furfuran |
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| ganef | (noun) (Yiddish) a thief or dishonest person or scoundrel (often used as a general term of abuse) | Synonyms: ganof, gonif, goniff |
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| garganey | (noun) small Eurasian teal | Synonyms: Anas querquedula |
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| gentianella | (noun) low-growing alpine plant cultivated for its dark glossy green leaves in basal rosettes and showy solitary bell-shaped blue flowers | Synonyms: Gentiana acaulis |
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| germaneness | (noun) pertinence by virtue of a close relation to the matter at hand | - |
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| gleaner | (noun) someone who picks up grain left in the field by the harvesters | - |
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| (noun) someone who gathers something in small pieces (e.g. information) slowly and carefully | - |
| groaner | (noun) a person who groans | - |
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| gyroplane | (noun) an aircraft that is supported in flight by unpowered rotating horizontal wings (or blades); forward propulsion is provided by a conventional propeller | Synonyms: autogiro, autogyro |
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| habanera | (noun) a Cuban dance in duple time | - |
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| (noun) music composed in duple time for dancing the habanera | - |
| haloalkane | (noun) organic compound in which halogen atoms have been substituted for hydrogen atoms in an alkane | Synonyms: alkyl halide |
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| halothane | (noun) a nonflammable inhalation anesthetic that produces general anesthesia; used along with analgesics and muscle relaxants for many types of surgical procedures | - |
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| henbane | (noun) poisonous fetid Old World herb having sticky hairy leaves and yellow-brown flowers; yields hyoscyamine and scopolamine | Synonyms: black henbane, Hyoscyamus niger, stinking nightshade |
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| heptane | (noun) a colorless volatile highly flammable liquid obtained from petroleum and used as an anesthetic or a solvent or in determining octane ratings | - |
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| hexane | (noun) a colorless flammable liquid alkane derived from petroleum and used as a solvent | - |
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| humaneness | (noun) the quality of compassion or consideration for others (people or animals) | - |
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| hurricane | (noun) a severe tropical cyclone usually with heavy rains and winds moving at 63-136 knots (12 on the Beaufort scale) | - |
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| hydroplane | (noun) an airplane that can land on or take off from water | Synonyms: seaplane |
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| (noun) a speedboat that is equipped with winglike structures that lift it so that it skims the water at high speeds | Synonyms: hydrofoil |