| afterbirth | (noun) the placenta and fetal membranes that are expelled from the uterus after the baby is born | - |
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| afterthought | (noun) an addition that was not included in the original plan | - |
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| (noun) thinking again about a choice previously made | Synonyms: reconsideration, rethink, second thought |
| airworthiness | (noun) fitness to fly | - |
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| anarthria | (noun) partial or total loss of articulate speech resulting from lesions of the central nervous system | - |
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| anorthite | (noun) rare plagioclastic feldspar occurring in many igneous rocks | - |
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| anorthography | (noun) a loss of the ability to write or to express thoughts in writing because of a brain lesion | Synonyms: agraphia, logagraphia |
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| anorthopia | (noun) distorted vision in which straight lines appear curved | - |
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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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| arthralgia | (noun) pain in a joint or joints | - |
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| arthritic | (noun) a person afflicted with arthritis | - |
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| arthritis | (noun) inflammation of a joint or joints | - |
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| arthrocentesis | (noun) removal of fluid from a joint by centesis | - |
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| arthrodesis | (noun) the surgical fixation of a joint which is intended to result in bone fusion | - |
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| arthrogram | (noun) an X ray of a joint after the injection of a contrast medium | - |
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| arthrography | (noun) roentgenographic examination of a joint after injection of radiopaque contrast medium; produces an arthrogram | - |
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| arthromere | (noun) any of the segments in the body of a jointed animal like an arthropod | - |
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| arthropathy | (noun) a pathology or abnormality of a joint | - |
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| arthroplasty | (noun) surgical reconstruction or replacement of a malformed or degenerated joint | - |
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| arthropod | (noun) invertebrate having jointed limbs and a segmented body with an exoskeleton made of chitin | - |
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| arthroscope | (noun) a type of endoscope that is inserted into a joint for visual examination | - |
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| arthroscopy | (noun) a minimally invasive operation to repair a damaged joint; the surgeon examines the joint with an arthroscope while making repairs through a small incision | - |
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| arthrospore | (noun) one of a string of thick walled vegetative resting cells formed by some algae and fungi | - |
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| (noun) a body that resembles a spore but is not an endospore; produced by some bacteria | - |
| berth | (noun) a job in an organization | Synonyms: office, place, position, post, situation |
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| (noun) a bed on a ship or train; usually in tiers | Synonyms: built in bed, bunk |
| (noun) a place where a craft can be made fast | Synonyms: moorage, mooring, slip |
| birth | (noun) the event of being born | Synonyms: nascence, nascency, nativity |
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| (noun) a baby born; an offspring | - |
| (noun) the process of giving birth | Synonyms: birthing, giving birth, parturition |
| (noun) the kinship relation of an offspring to the parents | Synonyms: parentage |
| (noun) the time when something begins (especially life) | - |
| birthday | (noun) an anniversary of the day on which a person was born (or the celebration of it) | - |
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| (noun) the date on which a person was born | Synonyms: natal day |
| birthing | (noun) the process of giving birth | Synonyms: birth, giving birth, parturition |
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| birthmark | (noun) a blemish on the skin that is formed before birth | Synonyms: nevus |
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| birthplace | (noun) the place where someone was born | Synonyms: place of birth |
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| (noun) where something originated or was nurtured in its early existence | Synonyms: cradle, place of origin, provenance, provenience |
| birthrate | (noun) the ratio of live births in an area to the population of that area; expressed per 1000 population per year | Synonyms: birth rate, fertility, fertility rate, natality |
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| birthright | (noun) a right or privilege that you are entitled to at birth | - |
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| (noun) an inheritance coming by right of birth (especially by primogeniture) | Synonyms: patrimony |
| birthroot | (noun) trillium of eastern North America having malodorous pink to purple flowers and an astringent root used in folk medicine especially to ease childbirth | Synonyms: purple trillium, red trillium, Trillium erectum |
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| birthwort | (noun) creeping plant having curving flowers thought to resemble fetuses; native to Europe; naturalized Great Britain and eastern North America | Synonyms: Aristolochia clematitis |
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| blameworthiness | (noun) a state of guilt | Synonyms: culpability, culpableness |
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| burthen | (noun) a variant of `burden' | - |
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| carthorse | (noun) draft horse kept for pulling carts | Synonyms: cart horse, drayhorse |
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| childbirth | (noun) the parturition process in human beings; having a baby; the process of giving birth to a child | Synonyms: accouchement, childbearing, vaginal birth |
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| chlorthalidone | (noun) a diuretic (trade names Hygroton and Thalidone) used to control hypertension and conditions that cause edema; effective in lowering blood pressure to prevent heart attacks | Synonyms: Hygroton, Thalidone |
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| courthouse | (noun) a building that houses judicial courts | - |
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| (noun) a government building that houses the offices of a county government | - |
| creditworthiness | (noun) trustworthiness with money as based on a person's credit history; a general qualification for borrowing | - |
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| dearth | (noun) an insufficient quantity or number | Synonyms: paucity |
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| (noun) an acute insufficiency | Synonyms: famine, shortage |
| diarthrosis | (noun) a joint so articulated as to move freely | Synonyms: articulatio synovialis, synovial joint |
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| dysarthria | (noun) impaired articulatory ability resulting from defects in the peripheral motor nerves or in the speech musculature | - |
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| earth | (noun) a connection between an electrical device and a large conducting body, such as the earth (which is taken to be at zero voltage) | Synonyms: ground |
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| (noun) the concerns of this life as distinguished from heaven and the afterlife | Synonyms: earthly concern, world, worldly concern |
| (noun) the abode of mortals (as contrasted with Heaven or Hell) | Synonyms: Earth |
| (noun) the solid part of the earth's surface | Synonyms: dry land, ground, land, solid ground, terra firma |
| (noun) the 3rd planet from the sun; the planet we live on | Synonyms: Earth, globe, world |
| (noun) the loose soft material that makes up a large part of the land surface | Synonyms: ground |
| (noun) once thought to be one of four elements composing the universe (Empedocles), associated with the humour black bile | - |
| earthball | (noun) any of various fungi of the genus Scleroderma having hard-skinned subterranean fruiting bodies resembling truffles | Synonyms: false truffle, hard-skinned puffball, puffball |
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| earthenware | (noun) ceramic ware made of porous clay fired at low heat | - |
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| earthing | (noun) fastening electrical equipment to earth | Synonyms: grounding |
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| earthling | (noun) an inhabitant of the earth | Synonyms: earthman, tellurian, worldling |
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| earthman | (noun) an inhabitant of the earth | Synonyms: earthling, tellurian, worldling |
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| earthnut | (noun) edible subterranean fungus of the genus Tuber | Synonyms: truffle |
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| (noun) pod of the peanut vine containing usually 2 nuts or seeds; `groundnut' and `monkey nut' are British terms | Synonyms: goober, goober pea, groundnut, monkey nut, peanut |
| (noun) a common European plant having edible tubers with the flavor of roasted chestnuts | Synonyms: Conopodium denudatum |
| (noun) any of various highly prized edible subterranean fungi of the genus Tuber; grow naturally in southwestern Europe | Synonyms: earth-ball, truffle |
| earthquake | (noun) shaking and vibration at the surface of the earth resulting from underground movement along a fault plane or from volcanic activity | Synonyms: quake, seism, temblor |
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| (noun) a disturbance that is extremely disruptive | - |
| earthstar | (noun) any fungus of the family Geastraceae; in form suggesting a puffball whose outer peridium splits into the shape of a star | - |
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| earthtongue | (noun) any club-shaped fungus of the genus Geoglossum | Synonyms: earth-tongue |
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| earthwork | (noun) an earthen rampart | - |
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| earthworm | (noun) terrestrial worm that burrows into and helps aerate soil; often surfaces when the ground is cool or wet; used as bait by anglers | Synonyms: angleworm, crawler, dew worm, fishing worm, fishworm, nightcrawler, nightwalker, red worm, wiggler |
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| enarthrosis | (noun) a freely moving joint in which a sphere on the head of one bone fits into a rounded cavity in the other bone | Synonyms: articulatio spheroidea, ball-and-socket joint, cotyloid joint, enarthrodial joint, spheroid joint |
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| epanorthosis | (noun) immediate rephrasing for intensification or justification | - |
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| farthing | (noun) a former British bronze coin worth a quarter of a penny | - |
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| farthingale | (noun) a hoop worn beneath a skirt to extend it horizontally; worn by European women in the 16th and 17th centuries | - |
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| firth | (noun) a long narrow estuary (especially in Scotland) | - |
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| forthcomingness | (noun) the state of being imminent and liable to happen soon | Synonyms: imminence, imminency, imminentness, impendence, impendency |
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| forthrightness | (noun) the quality of being honest and straightforward in attitude and speech | Synonyms: candidness, candor, candour, directness, frankness |
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| fourth | (noun) the musical interval between one note and another four notes away from it | - |
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| (noun) one of four equal parts | Synonyms: fourth part, one-fourth, one-quarter, quarter, quartern, twenty-five percent |
| (noun) following the third position; number four in a countable series | - |
| furtherance | (noun) the advancement of some enterprise | Synonyms: forwarding, promotion |
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| (noun) encouragement of the progress or growth or acceptance of something | Synonyms: advancement, promotion |
| girth | (noun) stable gear consisting of a band around a horse's belly that holds the saddle in place | Synonyms: cinch |
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| (noun) the distance around a person's body | - |
| halfpennyworth | (noun) the amount that can be bought for a halfpenny | Synonyms: ha'p'orth |
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| hearth | (noun) home symbolized as a part of the fireplace | Synonyms: fireside |
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| (noun) an open recess in a wall at the base of a chimney where a fire can be built | Synonyms: fireplace, open fireplace |
| (noun) an area near a fireplace (usually paved and extending out into a room) | Synonyms: fireside |
| hearthrug | (noun) a rug spread out in front of a fireplace | - |
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| hearthstone | (noun) a stone that forms a hearth | - |
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| hydrarthrosis | (noun) inflammation and swelling of a movable joint because of excess synovial fluid | - |
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| hyperthermia | (noun) abnormally high body temperature; sometimes induced (as in treating some forms of cancer) | Synonyms: hyperthermy |
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| hyperthermy | (noun) abnormally high body temperature; sometimes induced (as in treating some forms of cancer) | Synonyms: hyperthermia |
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| hyperthyroidism | (noun) an overactive thyroid gland; pathologically excessive production of thyroid hormones or the condition resulting from excessive production of thyroid hormones | Synonyms: thyrotoxicosis |
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| mirth | (noun) great merriment | Synonyms: glee, gleefulness, hilarity, mirthfulness |
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| mirthfulness | (noun) great merriment | Synonyms: glee, gleefulness, hilarity, mirth |
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| narthex | (noun) a vestibule leading to the nave of a church | - |
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| (noun) portico at the west end of an early Christian basilica or church | - |
| newsworthiness | (noun) the quality of being sufficiently interesting to be reported in news bulletins | Synonyms: news |
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| north | (noun) a location in the northern part of a country, region, or city | - |
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| (noun) the cardinal compass point that is at 0 or 360 degrees | Synonyms: due north, N, northward |
| (noun) the direction in which a compass needle points | Synonyms: compass north, magnetic north |
| (noun) the direction corresponding to the northward cardinal compass point | - |
| northeast | (noun) a location in the northeastern part of a country, region, or city | - |
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| (noun) the compass point midway between north and east; at 45 degrees | Synonyms: NE, nor'-east, northeastward |
| (noun) the direction corresponding to the northeastward compass point | - |
| northeaster | (noun) a storm blowing from the northeast | Synonyms: noreaster |
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| northeastward | (noun) the compass point midway between north and east; at 45 degrees | Synonyms: NE, nor'-east, northeast |
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| norther | (noun) a wind that blows from the north | Synonyms: boreas, north wind, northerly |
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| northerly | (noun) a wind that blows from the north | Synonyms: boreas, north wind, norther |
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| northernness | (noun) the property of being to the north | - |
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| northland | (noun) any region lying in or toward the north | - |
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| northward | (noun) the cardinal compass point that is at 0 or 360 degrees | Synonyms: due north, N, north |
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| northwest | (noun) a location in the northwestern part of a country, region, or city | - |
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| (noun) the compass point midway between north and west; at 315 degrees | Synonyms: nor'-west, northwestward, NW |
| (noun) the direction corresponding to the northwestward compass point | - |
| northwester | (noun) a wind from the northwest | Synonyms: northwest wind |
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| northwestward | (noun) the compass point midway between north and west; at 315 degrees | Synonyms: nor'-west, northwest, NW |
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| orthicon | (noun) a now obsolete picture pickup tube in a television camera; electrons emitted from a photoemissive surface in proportion to the intensity of the incident light are focused onto the target causing secondary emission of electrons | Synonyms: image orthicon |
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| orthochorea | (noun) a form of chorea in which spasms occur mainly when the patient is erect | - |
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| orthoclase | (noun) a white or colored monoclinic feldspar | - |
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| orthodontia | (noun) the branch of dentistry dealing with the prevention or correction of irregularities of the teeth | Synonyms: dental orthopaedics, dental orthopedics, orthodontics, orthodonture |
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| orthodontics | (noun) the branch of dentistry dealing with the prevention or correction of irregularities of the teeth | Synonyms: dental orthopaedics, dental orthopedics, orthodontia, orthodonture |
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| orthodontist | (noun) a dentist specializing in the prevention or correction of irregularities of the teeth | - |
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| orthodonture | (noun) the branch of dentistry dealing with the prevention or correction of irregularities of the teeth | Synonyms: dental orthopaedics, dental orthopedics, orthodontia, orthodontics |
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| orthodoxy | (noun) the quality of being orthodox (especially in religion) | - |
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| (noun) a belief or orientation agreeing with conventional standards | - |
| orthoepist | (noun) a practitioner of orthoepy (especially one of the 17th or 18th century scholars who proposed to reform English spelling so it would reflect pronunciation more closely) | - |
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| orthoepy | (noun) a term formerly used for the part of phonology that dealt with the `correct' pronunciation of words and its relation to `correct' orthography | - |
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| (noun) the way a word or a language is customarily spoken | Synonyms: pronunciation |
| orthogonality | (noun) the quality of lying or intersecting at right angles | - |
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| (noun) the relation of opposition between things at right angles | Synonyms: orthogonal opposition, perpendicularity |
| orthography | (noun) a method of representing the sounds of a language by written or printed symbols | Synonyms: writing system |
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