| aerial | (noun) a pass to a receiver downfield from the passer | Synonyms: forward pass |
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| (noun) an electrical device that sends or receives radio or television signals | Synonyms: antenna, transmitting aerial |
| aerialist | (noun) an acrobat who performs in the air (as on a rope or trapeze) | - |
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| aerides | (noun) any orchid of the genus Aerides | - |
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| aerie | (noun) any habitation at a high altitude | Synonyms: aery, eyrie, eyry |
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| (noun) the lofty nest of a bird of prey (such as a hawk or eagle) | Synonyms: aery, eyrie, eyry |
| afterimage | (noun) an image (usually a negative image) that persists after stimulation has ceased | Synonyms: aftersensation |
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| alfileria | (noun) European weed naturalized in southwestern United States and Mexico having reddish decumbent stems with small fernlike leaves and small deep reddish-lavender flowers followed by slender fruits that stick straight up; often grown for forage | Synonyms: alfilaria, clocks, Erodium cicutarium, filaree, filaria, pin clover, pin grass, redstem storksbill |
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| allomerism | (noun) (chemistry) variability in chemical composition without variation in crystalline form | - |
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| alphanumerics | (noun) a character set that includes letters and digits and punctuation | Synonyms: alphanumeric characters |
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| alstroemeria | (noun) any of various South American plants of the genus Alstroemeria valued for their handsome umbels of beautiful flowers | - |
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| altering | (noun) the sterilization of an animal | Synonyms: fixing, neutering |
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| ambidexterity | (noun) the property of being equally skillful with each hand | Synonyms: ambidextrousness |
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| americium | (noun) a radioactive transuranic metallic element; discovered by bombarding uranium with helium atoms | Synonyms: Am, atomic number 95 |
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| amethopterin | (noun) toxic antimetabolite that limits cellular reproduction by acting as an antagonist to folic acid; used to treat certain cancers and psoriasis and rheumatoid arthritis | Synonyms: methotrexate, methotrexate sodium |
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| amphotericin | (noun) an antibiotic and antifungal agent | - |
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| angiopteris | (noun) highly variable species of very large primitive ferns of the Pacific tropical areas with high rainfall | Synonyms: Angiopteris evecta, giant fern |
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| anterior | (noun) a tooth situated at the front of the mouth | Synonyms: front tooth |
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| anteriority | (noun) the quality of being in front or (in lower animals) toward the head | - |
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| (noun) preceding in time | Synonyms: antecedence, antecedency, precedence, precedency, priority |
| antheridiophore | (noun) gametophore bearing antheridia as in certain mosses and liverworts | - |
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| antheridium | (noun) the male sex organ of spore-producing plants; produces antherozoids; equivalent to the anther in flowers | - |
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| antibacterial | (noun) any drug that destroys bacteria or inhibits their growth | Synonyms: antibacterial drug, bactericide |
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| aperient | (noun) a purging medicine; stimulates evacuation of the bowels | Synonyms: cathartic, physic, purgative |
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| aperitif | (noun) alcoholic beverage taken before a meal as an appetizer | - |
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| archaebacteria | (noun) considered ancient life forms that evolved separately from bacteria and blue-green algae | Synonyms: archaebacterium, archaeobacteria, archeobacteria |
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| archaebacterium | (noun) considered ancient life forms that evolved separately from bacteria and blue-green algae | Synonyms: archaebacteria, archaeobacteria, archeobacteria |
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| archaeobacteria | (noun) considered ancient life forms that evolved separately from bacteria and blue-green algae | Synonyms: archaebacteria, archaebacterium, archeobacteria |
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| archeobacteria | (noun) considered ancient life forms that evolved separately from bacteria and blue-green algae | Synonyms: archaebacteria, archaebacterium, archaeobacteria |
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| arteria | (noun) a blood vessel that carries blood from the heart to the body | Synonyms: arterial blood vessel, artery |
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| arteriectasia | (noun) an abnormal distension of an artery | Synonyms: arteriectasis |
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| arteriectasis | (noun) an abnormal distension of an artery | Synonyms: arteriectasia |
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| arteriogram | (noun) an X ray of an artery filled with a contrast medium | - |
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| arteriography | (noun) roentgenographic examination of arteries | - |
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| arteriola | (noun) one of the small thin-walled arteries that end in capillaries | Synonyms: arteriole, capillary artery |
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| arteriole | (noun) one of the small thin-walled arteries that end in capillaries | Synonyms: arteriola, capillary artery |
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| arteriolosclerosis | (noun) sclerosis of the arterioles | - |
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| arteriosclerosis | (noun) sclerosis of the arterial walls | Synonyms: arterial sclerosis, coronary-artery disease, hardening of the arteries, induration of the arteries |
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| arteritis | (noun) inflammation of an artery | - |
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| asperity | (noun) something hard to endure | Synonyms: grimness, hardship, rigor, rigorousness, rigour, rigourousness, severeness, severity |
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| (noun) harshness of manner | Synonyms: sharpness |
| asterion | (noun) the craniometric point at the junction of the lamboid suture and the occipitomastoid suture and the parietomastoid suture | - |
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| asterisk | (noun) a star-shaped character * used in printing | Synonyms: star |
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| asterism | (noun) (astronomy) a cluster of stars (or a small constellation) | - |
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| (noun) (mineralogy) a star-shaped figure with six rays that is seen in some crystal structures under reflected or transmitted light | - |
| atmospherics | (noun) a crackling or hissing noise caused by electrical interference | Synonyms: atmospheric static, static |
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| austerity | (noun) the trait of great self-denial (especially refraining from worldly pleasures) | Synonyms: asceticism, nonindulgence |
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| bacteria | (noun) (microbiology) single-celled or noncellular spherical or spiral or rod-shaped organisms lacking chlorophyll that reproduce by fission; important as pathogens and for biochemical properties; taxonomy is difficult; often considered to be plants | Synonyms: bacterium |
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| bacteriacide | (noun) any chemical agent that destroys bacteria | Synonyms: bactericide |
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| bacteriaemia | (noun) transient presence of bacteria (or other microorganisms) in the blood | Synonyms: bacteremia, bacteriemia |
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| bactericide | (noun) any drug that destroys bacteria or inhibits their growth | Synonyms: antibacterial, antibacterial drug |
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| (noun) any chemical agent that destroys bacteria | Synonyms: bacteriacide |
| bacteriemia | (noun) transient presence of bacteria (or other microorganisms) in the blood | Synonyms: bacteremia, bacteriaemia |
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| bacteriochlorophyll | (noun) a substance in photosensitive bacteria that is related to but different from chlorophyll of higher plants | - |
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| bacteriologist | (noun) a biologist who studies bacteria | - |
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| bacteriology | (noun) the branch of medical science that studies bacteria in relation to disease | - |
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| bacteriolysis | (noun) dissolution or destruction of bacteria | - |
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| bacteriophage | (noun) a virus that is parasitic (reproduces itself) in bacteria | Synonyms: phage |
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| bacteriostasis | (noun) inhibition of the growth of bacteria | - |
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| bacteriostat | (noun) a chemical or biological material that inhibits bacterial growth | - |
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| bacterium | (noun) (microbiology) single-celled or noncellular spherical or spiral or rod-shaped organisms lacking chlorophyll that reproduce by fission; important as pathogens and for biochemical properties; taxonomy is difficult; often considered to be plants | Synonyms: bacteria |
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| badgering | (noun) the act of harassing someone | Synonyms: bedevilment, torment, worrying |
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| ballerina | (noun) a female ballet dancer | Synonyms: danseuse |
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| banderilla | (noun) a decorated dart that is implanted in the neck or shoulders of the bull during a bull fight | - |
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| banderillero | (noun) the bullfighter who implants decorated darts (banderillas) into the neck or shoulders of the bull during a bull fight | - |
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| battering | (noun) the act of subjecting to strong attack | Synonyms: banging |
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| beleaguering | (noun) the action of an armed force that surrounds a fortified place and isolates it while continuing to attack | Synonyms: besieging, military blockade, siege |
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| beriberi | (noun) avitaminosis caused by lack of thiamine (vitamin B1) | - |
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| bickering | (noun) a quarrel about petty points | Synonyms: bicker, fuss, pettifoggery, spat, squabble, tiff |
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| bioengineering | (noun) the branch of engineering science in which biological science is used to study the relation between workers and their environments | Synonyms: biotechnology, ergonomics |
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| blistering | (noun) the formation of vesicles in or beneath the skin | Synonyms: vesication, vesiculation |
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| bowdlerisation | (noun) the act of deleting or modifying all passages considered to be indecent | Synonyms: bowdlerization |
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| (noun) written material that has been bowdlerized | Synonyms: bowdlerization |
| bowdleriser | (noun) a person who edits a text by removing obscene or offensive words or passages | Synonyms: bowdlerizer, expurgator |
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| bowdlerization | (noun) the act of deleting or modifying all passages considered to be indecent | Synonyms: bowdlerisation |
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| (noun) written material that has been bowdlerized | Synonyms: bowdlerisation |
| bowdlerizer | (noun) a person who edits a text by removing obscene or offensive words or passages | Synonyms: bowdleriser, expurgator |
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| brasserie | (noun) a small restaurant serving beer and wine as well as food; usually cheap | - |
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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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| budgerigar | (noun) small Australian parakeet usually light green with black and yellow markings in the wild but bred in many colors | Synonyms: budgereegah, budgerygah, budgie, grass parakeet, lovebird, Melopsittacus undulatus, shell parakeet |
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| butchering | (noun) the business of a butcher | Synonyms: butchery |
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| cadaverine | (noun) a colorless toxic ptomaine with an unpleasant odor formed during the putrefaction of animal tissue | - |
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| cafeteria | (noun) a restaurant where you serve yourself and pay a cashier | - |
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| camaraderie | (noun) the quality of affording easy familiarity and sociability | Synonyms: chumminess, comradeliness, comradery, comradeship |
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| careerism | (noun) the practice of advancing your career at the expense of your personal integrity | - |
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| careerist | (noun) a professional who is intent on furthering his or her career by any possible means and often at the expense of their own integrity | - |
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| carpenteria | (noun) California evergreen shrub having glossy opposite leaves and terminal clusters of a few fragrant white flowers | Synonyms: Carpenteria californica |
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| cassiterite | (noun) a hard heavy dark mineral that is the chief source of tin | - |
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| catering | (noun) providing food and services | - |
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| catheterisation | (noun) the operation of introducing a catheter into the body | Synonyms: catheterization |
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| catheterization | (noun) the operation of introducing a catheter into the body | Synonyms: catheterisation |
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| causerie | (noun) light informal conversation for social occasions | Synonyms: chin-wag, chin-wagging, chin wag, chin wagging, chit-chat, chit chat, chitchat, gab, gabfest, gossip, small talk, tittle-tattle |
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| cauterisation | (noun) the act of coagulating blood and destroying tissue with a hot iron or caustic agent or by freezing | Synonyms: cauterization, cautery |
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| cauterization | (noun) the act of coagulating blood and destroying tissue with a hot iron or caustic agent or by freezing | Synonyms: cauterisation, cautery |
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| celeriac | (noun) thickened edible aromatic root of a variety of celery plant | Synonyms: celery root |
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| (noun) grown for its thickened edible aromatic root | Synonyms: Apium graveolens rapaceum, celery root, knob celery, root celery, turnip-rooted celery |
| celerity | (noun) a rate that is rapid | Synonyms: quickness, rapidity, rapidness, speediness |
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| centering | (noun) (American football) putting the ball in play by passing it (between the legs) to a back | Synonyms: centring, snap |
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| (noun) the concentration of attention or energy on something | Synonyms: centring, direction, focal point, focus, focusing, focussing |
| ceriman | (noun) tropical cylindrical fruit resembling a pinecone with pineapple-banana flavor | Synonyms: monstera |
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| (noun) tropical American vine having roots that hang like cords and cylindrical fruit with a pineapple and banana flavor | Synonyms: Monstera deliciosa |
| cerise | (noun) a red the color of ripe cherries | Synonyms: cherry, cherry red |
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| cerium | (noun) a ductile grey metallic element of the lanthanide series; used in lighter flints; the most abundant of the rare-earth group | Synonyms: atomic number 58, Ce |
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| cerivastatin | (noun) an oral drug (trade name Baycol) to reduce blood cholesterol levels | Synonyms: Baycol |
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| characterisation | (noun) a graphic or vivid verbal description | Synonyms: characterization, delineation, depiction, picture, word-painting, word picture |
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| (noun) the act of describing distinctive characteristics or essential features | Synonyms: characterization |
| characteristic | (noun) a distinguishing quality; a feature that can be used to identify something | - |
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| (noun) any measurable property of a device measured under closely specified conditions | Synonyms: device characteristic |
| (noun) a prominent attribute or aspect of something | Synonyms: feature |
| (noun) the integer part (positive or negative) of the representation of a logarithm; in the expression log 643 = 2.808 the characteristic is 2 | - |
| characteristicness | (noun) The quality or state of being a distinguishing feature of a person or thing. | - |
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| characterization | (noun) acting the part of a character on stage; dramatically representing the character by speech and action and gesture | Synonyms: enactment, personation, portrayal |
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| (noun) a graphic or vivid verbal description | Synonyms: characterisation, delineation, depiction, picture, word-painting, word picture |
| (noun) the act of describing distinctive characteristics or essential features | Synonyms: characterisation |
| charcuterie | (noun) a delicatessen that specializes in meats | - |
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| chattering | (noun) the high-pitched continuing noise made by animals (birds or monkeys) | Synonyms: chatter |
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| (noun) the rapid series of noises made by the parts of a machine | Synonyms: chatter |
| cheering | (noun) encouragement in the form of cheers from spectators | Synonyms: shouting |
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