| abamp | (noun) a unit of current equal to 10 amperes | Synonyms: abampere |
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| abampere | (noun) a unit of current equal to 10 amperes | Synonyms: abamp |
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| afterdamp | (noun) a toxic mixture of gases (including carbon dioxide and carbon monoxide and nitrogen) after an explosion of firedamp in a mine | - |
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| amp | (noun) the basic unit of electric current adopted under the Systeme International d'Unites | Synonyms: A, ampere |
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| amperage | (noun) the strength of an electrical current measured in amperes | - |
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| ampere | (noun) the basic unit of electric current adopted under the Systeme International d'Unites | Synonyms: A, amp |
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| (noun) a former unit of electric current (slightly smaller than the SI ampere) | Synonyms: international ampere |
| ampersand | (noun) a punctuation mark (&) used to represent conjunction (and) | - |
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| amphetamine | (noun) a central nervous system stimulant that increases energy and decreases appetite; used to treat narcolepsy and some forms of depression | Synonyms: pep pill, speed, upper |
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| amphibia | (noun) the class of vertebrates that live on land but breed in water, frogs, toads, newts, salamanders, caecilians | Synonyms: class Amphibia |
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| amphibian | (adjective) relating to or characteristic of animals of the class Amphibia | Synonyms: amphibious |
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| (noun) cold-blooded vertebrate typically living on land but breeding in water; aquatic larvae undergo metamorphosis into adult form | - |
| (noun) an airplane designed to take off and land on water | Synonyms: amphibious aircraft |
| (noun) a flat-bottomed motor vehicle that can travel on land or water | Synonyms: amphibious vehicle |
| amphibiotic | (adjective) having an aquatic early or larval form and a terrestrial adult form | Synonyms: semiaquatic |
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| amphibious | (adjective) operating or living on land and in water | - |
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| (adjective) relating to or characteristic of animals of the class Amphibia | Synonyms: amphibian |
| amphibole | (noun) a mineral or mineral variety belonging to the amphibole group | - |
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| amphibolite | (noun) a metamorphic rock composed chiefly of amphibole and plagioclase | - |
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| amphibology | (noun) an ambiguous grammatical construction; e.g., `they are flying planes' can mean either that someone is flying planes or that something is flying planes | Synonyms: amphiboly |
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| amphiboly | (noun) an ambiguous grammatical construction; e.g., `they are flying planes' can mean either that someone is flying planes or that something is flying planes | Synonyms: amphibology |
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| amphibrach | (noun) a metrical unit with unstressed-stressed-unstressed syllables (e.g., `remember') | - |
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| amphictyony | (noun) an association of neighboring states or tribes in ancient Greece; established originally to defend a common religious center | - |
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| amphidiploid | (noun) (genetics) an organism or cell having a diploid set of chromosomes from each parent | - |
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| amphidiploidy | (noun) the condition of being amphidiploid | - |
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| amphigory | (noun) nonsensical writing (usually verse) | Synonyms: nonsense verse |
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| amphimixis | (noun) union of sperm and egg in sexual reproduction | - |
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| (noun) reproduction involving the union or fusion of a male and a female gamete | Synonyms: sexual reproduction |
| amphioxus | (noun) small translucent lancet-shaped burrowing marine animal; primitive forerunner of the vertebrates | Synonyms: lancelet |
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| amphipod | (noun) a kind of malacostracan crustacean | - |
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| amphiprostylar | (adjective) marked by columniation having free columns in porticoes either at both ends or at both sides of a structure | Synonyms: amphiprostyle, amphistylar, porticoed |
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| amphiprostyle | (adjective) marked by columniation having free columns in porticoes either at both ends or at both sides of a structure | Synonyms: amphiprostylar, amphistylar, porticoed |
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| amphiprotic | (adjective) having characteristics of both an acid and a base and capable of reacting as either | Synonyms: amphoteric |
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| amphisbaena | (noun) (classical mythology) a serpent with a head at each end of its body | - |
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| amphistylar | (adjective) marked by columniation having free columns in porticoes either at both ends or at both sides of a structure | Synonyms: amphiprostylar, amphiprostyle, porticoed |
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| (adjective) having columns either at both ends or at both sides | - |
| amphitheater | (noun) an oval large stadium with tiers of seats; an arena in which contests and spectacles are held | Synonyms: amphitheatre, coliseum |
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| (noun) a sloping gallery with seats for spectators (as in an operating room or theater) | Synonyms: amphitheatre |
| amphitheatre | (noun) an oval large stadium with tiers of seats; an arena in which contests and spectacles are held | Synonyms: amphitheater, coliseum |
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| (noun) a sloping gallery with seats for spectators (as in an operating room or theater) | Synonyms: amphitheater |
| amphitheatric | (adjective) of or related to an amphitheater | Synonyms: amphitheatrical |
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| amphitheatrical | (adjective) of or related to an amphitheater | Synonyms: amphitheatric |
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| amphitropous | (adjective) (of a plant ovule) partly inverted; turned back 90 degrees on its stalk | - |
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| amphiuma | (noun) aquatic eel-shaped salamander having two pairs of very small feet; of still muddy waters in the southern United States | Synonyms: blind eel, congo eel, congo snake |
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| ampholyte | (noun) A substance that acts as a base or an acid, depending on the pH of the solution into which it is introduced. | Synonyms: amphoteric electrolyte |
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| amphora | (noun) an ancient jar with two handles and a narrow neck; used to hold oil or wine | - |
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| amphoric | (adjective) the sound heard in auscultation resembling the hollow sound made by blowing across the mouth of a bottle | - |
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| amphoteric | (adjective) having characteristics of both an acid and a base and capable of reacting as either | Synonyms: amphiprotic |
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| amphotericin | (noun) an antibiotic and antifungal agent | - |
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| ampicillin | (noun) semisynthetic penicillin (trade names Principen and Polycillin and SK-Ampicillin) | Synonyms: Polycillin, Principen, SK-Ampicillin |
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| ample | (adjective) more than enough in size or scope or capacity | - |
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| (adjective) affording an abundant supply | Synonyms: copious, plenteous, plentiful, rich |
| (adjective) fairly large in size | Synonyms: sizable, sizeable |
| ampleness | (noun) the property of impressive largeness in size | - |
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| (noun) the property of being more than sufficient; comfortable sufficiency | - |
| amplification | (noun) (electronics) the act of increasing voltage or power or current | - |
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| (noun) addition of extra material or illustration or clarifying detail | Synonyms: elaboration |
| (noun) the amount of increase in signal power or voltage or current expressed as the ratio of output to input | Synonyms: gain |
| amplifier | (noun) electronic equipment that increases strength of signals passing through it | - |
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| amplify | (verb) increase in size, volume or significance | Synonyms: magnify |
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| (verb) increase the volume of | - |
| (verb) exaggerate or make bigger | Synonyms: blow up, expand, inflate |
| (verb) to enlarge beyond bounds or the truth | Synonyms: exaggerate, hyperbolise, hyperbolize, magnify, overdraw, overstate |
| amplitude | (noun) greatness of magnitude | - |
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| (noun) the property of copious abundance | Synonyms: bountifulness, bounty |
| (noun) (physics) the maximum displacement of a periodic wave | - |
| amply | (adverb) to an ample degree or in an ample manner | Synonyms: richly |
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| (adverb) sufficiently; more than adequately | Synonyms: fully |
| ampoule | (noun) a small bottle that contains a drug (especially a sealed sterile container for injection by needle) | Synonyms: ampul, ampule, phial, vial |
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| ampul | (noun) a small bottle that contains a drug (especially a sealed sterile container for injection by needle) | Synonyms: ampoule, ampule, phial, vial |
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| ampule | (noun) a small bottle that contains a drug (especially a sealed sterile container for injection by needle) | Synonyms: ampoule, ampul, phial, vial |
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| ampulla | (noun) a flask that has two handles; used by Romans for wines or oils | - |
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| (noun) the dilated portion of a canal or duct especially of the semicircular canals of the ear | - |
| ampullar | (adjective) of or related to an ampulla | Synonyms: ampullary |
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| ampullary | (adjective) of or related to an ampulla | Synonyms: ampullar |
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| amputate | (verb) remove surgically | Synonyms: cut off |
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| amputation | (noun) a surgical removal of all or part of a limb | - |
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| (noun) a condition of disability resulting from the loss of one or more limbs | - |
| amputator | (noun) a surgeon who removes part or all of a limb | - |
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| amputee | (noun) someone who has had a limb removed by amputation | - |
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| blackdamp | (noun) the atmosphere in a mine following an explosion; high in carbon dioxide and incapable of supporting life | Synonyms: chokedamp |
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| blowlamp | (noun) a burner that mixes air and gas to produce a very hot flame | Synonyms: blowtorch, torch |
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| camp | (adjective) providing sophisticated amusement by virtue of having artificially (and vulgarly) mannered or banal or sentimental qualities | Synonyms: campy |
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| (noun) temporary living quarters specially built by the army for soldiers | Synonyms: bivouac, cantonment, encampment |
| (noun) temporary lodgings in the country for travelers or vacationers | - |
| (noun) a penal institution (often for forced labor) | - |
| (noun) a site where care and activities are provided for children during the summer months | Synonyms: summer camp |
| (noun) shelter for persons displaced by war or political oppression or for religious beliefs | Synonyms: refugee camp |
| (noun) something that is considered amusing not because of its originality but because of its unoriginality | - |
| (noun) a group of people living together in a camp | - |
| (noun) an exclusive circle of people with a common purpose | Synonyms: clique, coterie, ingroup, inner circle, pack |
| (verb) give an artificially banal or sexual quality to | - |
| (verb) establish or set up a camp | Synonyms: camp down |
| (verb) live in or as if in a tent | Synonyms: bivouac, camp out, encamp, tent |
| campaign | (noun) several related operations aimed at achieving a particular goal (usually within geographical and temporal constraints) | Synonyms: military campaign |
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| (noun) an overland journey by hunters (especially in Africa) | Synonyms: hunting expedition, safari |
| (noun) a series of actions advancing a principle or tending toward a particular end | Synonyms: cause, crusade, drive, effort, movement |
| (noun) a race between candidates for elective office | Synonyms: political campaign, run |
| (verb) go on a campaign; go off to war | Synonyms: take the field |
| (verb) run, stand, or compete for an office or a position | Synonyms: run |
| (verb) exert oneself continuously, vigorously, or obtrusively to gain an end or engage in a crusade for a certain cause or person; be an advocate for | Synonyms: agitate, crusade, fight, press, push |
| campaigner | (noun) a politician who is running for public office | Synonyms: candidate, nominee |
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| campaigning | (noun) the campaign of a candidate to be elected | Synonyms: candidacy, candidature, electioneering, political campaign |
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| campana | (noun) the shape of a bell | Synonyms: bell, bell shape |
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| campanile | (noun) a bell tower; usually stands alone unattached to a building | Synonyms: belfry |
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| campanula | (noun) any of various plants of the genus Campanula having blue or white bell-shaped flowers | Synonyms: bellflower |
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| campanular | (adjective) shaped like a bell or campana | Synonyms: campanulate, campanulated |
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| campanulate | (adjective) shaped like a bell or campana | Synonyms: campanular, campanulated |
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| campanulated | (adjective) shaped like a bell or campana | Synonyms: campanular, campanulate |
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| campeachy | (noun) spiny shrub or small tree of Central America and West Indies having bipinnate leaves and racemes of small bright yellow flowers and yielding a hard brown or brownish-red heartwood used in preparing a black dye | Synonyms: bloodwood tree, Haematoxylum campechianum, logwood, logwood tree |
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| camper | (noun) a recreational vehicle equipped for camping out while traveling | Synonyms: camping bus, motor home |
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| (noun) someone living temporarily in a tent or lodge for recreation | - |
| campestral | (adjective) of fields or open country | - |
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| campfire | (noun) a small outdoor fire for warmth or cooking (as at a camp) | - |
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| campground | (noun) a site where people on holiday can pitch a tent | Synonyms: bivouac, camping area, camping ground, camping site, campsite, encampment |
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| camphor | (noun) a resin obtained from the camphor tree; used in making celluloid and liniment | - |
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| camphoraceous | (adjective) being or having the properties of camphor | - |
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| camphorate | (verb) treat with camphor | - |
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| camphorated | (adjective) impregnated with camphor | - |
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| camphoric | (adjective) relating to or derived from or containing camphor | - |
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| camphorweed | (noun) aromatic plant of western United States | Synonyms: Trichostema lanceolatum, turpentine camphor weed, vinegarweed |
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| camping | (noun) the act of encamping and living in tents in a camp | Synonyms: bivouacking, encampment, tenting |
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| campion | (noun) any plant of the genus Silene | Synonyms: catchfly, silene |
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| campmate | (noun) someone who lives in the same camp you do | - |
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| campong | (noun) a native malay village | Synonyms: kampong |
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| campsite | (noun) a site where people on holiday can pitch a tent | Synonyms: bivouac, campground, camping area, camping ground, camping site, encampment |
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| campstool | (noun) a folding stool | - |
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| campus | (noun) a field on which the buildings of a university are situated | - |
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| campy | (adjective) providing sophisticated amusement by virtue of having artificially (and vulgarly) mannered or banal or sentimental qualities | Synonyms: camp |
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| campylotropous | (adjective) (of a plant ovule) curved with the micropyle near the base almost touching its stalk | - |
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| champ | (noun) someone who has won first place in a competition | Synonyms: champion, title-holder |
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| (verb) chew noisily or vigorously | Synonyms: chomp |
| (verb) chafe at the bit, like horses | - |
| champagne | (noun) a white sparkling wine either produced in Champagne or resembling that produced there | Synonyms: bubbly |
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| champaign | (noun) extensive tract of level open land | Synonyms: field, plain |
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| champerty | (noun) an unethical agreement between an attorney and client that the attorney would sue and pay the costs of the client's suit in return for a portion of the damages awarded | - |
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| champion | (adjective) holding first place in a contest | Synonyms: prizewinning |
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| (noun) someone who fights for a cause | Synonyms: fighter, hero, paladin |
| (noun) someone who has won first place in a competition | Synonyms: champ, title-holder |
| (noun) a person who backs a politician or a team etc. | Synonyms: admirer, booster, friend, protagonist, supporter |
| (noun) someone who is dazzlingly skilled in any field | Synonyms: ace, adept, genius, hotshot, maven, mavin, sensation, star, superstar, virtuoso, whiz, whizz, wiz, wizard |
| (verb) protect or fight for as a champion | Synonyms: defend |
| championship | (noun) the act of providing approval and support | Synonyms: backing, backup, patronage |
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| (noun) a competition at which a champion is chosen | - |
| (noun) the status of being a champion | Synonyms: title |
| champleve | (adjective) (for metals) having areas separated by metal and filled with colored enamel and fired | Synonyms: cloisonne |
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| chloramphenicol | (noun) an oral antibiotic (trade name Chloromycetin) used to treat serious infections (especially typhoid fever) | Synonyms: Chloromycetin |
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| chokedamp | (noun) the atmosphere in a mine following an explosion; high in carbon dioxide and incapable of supporting life | Synonyms: blackdamp |
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| clamp | (noun) a device (generally used by carpenters) that holds things firmly together | Synonyms: clinch |
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| (verb) impose or inflict forcefully | - |
| (verb) fasten or fix with a clamp | - |