| thyrotropin | (noun) anterior pituitary hormone that stimulates the function of the thyroid gland | Synonyms: thyroid-stimulating hormone, thyrotrophic hormone, thyrotrophin, thyrotropic hormone, TSH |
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| thyroxin | (noun) hormone produced by the thyroid glands to regulate metabolism by controlling the rate of oxidation in cells | Synonyms: T, tetraiodothyronine, thyroxine |
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| tiepin | (noun) a pin used to hold the tie in place | Synonyms: scarfpin, tie tack |
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| tiffin | (noun) a midday meal | Synonyms: dejeuner, lunch, luncheon |
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| tin | (noun) airtight sealed metal container for food or drink or paint etc. | Synonyms: can, tin can |
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| (noun) metal container for storing dry foods such as tea or flour | Synonyms: canister, cannister |
| (noun) a vessel (box, can, pan, etc.) made of tinplate and used mainly in baking | - |
| (noun) a silvery malleable metallic element that resists corrosion; used in many alloys and to coat other metals to prevent corrosion; obtained chiefly from cassiterite where it occurs as tin oxide | Synonyms: atomic number 50, Sn |
| tiyin | (noun) 100 tiyin equal 1 tenge in Kazakhstan | - |
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| (noun) 100 tiyin equal 1 som in Uzbekistan | - |
| tobramycin | (noun) an antibiotic (trade name Nebcin) that is especially effective against Gram-negative bacteria | Synonyms: Nebcin |
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| tocsin | (noun) a bell used to sound an alarm | Synonyms: warning bell |
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| (noun) the sound of an alarm (usually a bell) | Synonyms: alarm bell |
| topspin | (noun) forward spin (usually of a moving ball) that is imparted by an upward stroke | - |
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| toxin | (noun) a poisonous substance produced during the metabolism and growth of certain microorganisms and some higher plant and animal species | - |
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| train | (noun) public transport provided by a line of railway cars coupled together and drawn by a locomotive | Synonyms: railroad train |
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| (noun) wheelwork consisting of a connected set of rotating gears by which force is transmitted or motion or torque is changed | Synonyms: gear, gearing, geartrain, power train |
| (noun) piece of cloth forming the long back section of a gown that is drawn along the floor | - |
| (noun) a series of consequences wrought by an event | - |
| (noun) a procession (of wagons or mules or camels) traveling together in single file | Synonyms: caravan, wagon train |
| (noun) a sequentially ordered set of things or events or ideas in which each successive member is related to the preceding | Synonyms: string |
| transferrin | (noun) a globulin in blood plasma that carries iron | Synonyms: beta globulin, siderophilin |
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| tributyrin | (noun) a bitter oily triglyceride of butyric acid; a form of butyrin | - |
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| trinitroglycerin | (noun) a heavy yellow poisonous oily explosive liquid obtained by nitrating glycerol; used in making explosives and medically as a vasodilator (trade names Nitrospan and Nitrostat) | Synonyms: glyceryl trinitrate, nitroglycerin, nitroglycerine, Nitrospan, Nitrostat |
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| triolein | (noun) a naturally occurring glyceride of oleic acid that is found in fats and oils | Synonyms: olein |
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| tripalmitin | (noun) a triglyceride of palmitic acid | Synonyms: glycerol tripalmitate |
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| tristearin | (noun) a triglyceride of stearic acid | Synonyms: glycerol tristearate |
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| trypsin | (noun) an enzyme of pancreatic origin; catalyzes the hydrolysis of proteins to smaller polypeptide units | - |
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| tuberculin | (noun) a sterile liquid containing a purified protein derivative of the tuberculosis bacterium; used in the diagnosis of tuberculosis | - |
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| turnverein | (noun) a club of tumblers or gymnasts | - |
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| twain | (noun) two items of the same kind | Synonyms: brace, couple, couplet, distich, duad, duet, duo, dyad, pair, span, twosome, yoke |
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| twin | (noun) a duplicate copy | Synonyms: counterpart, similitude |
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| (noun) either of two offspring born at the same time from the same pregnancy | - |
| tyrocidin | (noun) a basic polypeptide antibiotic derived from a soil bacterium; a major component of tyrothricin | Synonyms: tyrocidine |
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| tyrothricin | (noun) a mixture of antibiotics applied locally to infections caused by Gram-positive bacteria | - |
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| urchin | (noun) poor and often mischievous city child | - |
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| urobilin | (noun) brown bile pigment formed from urobilinogens and found in feces and in small amounts in urine | - |
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| vancomycin | (noun) an antibiotic (trade name Vancocin) effective against some bacterial infections | Synonyms: Vancocin |
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| vanillin | (noun) a crystalline compound found in vanilla beans and some balsam resins; used in perfumes and flavorings | - |
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| vasopressin | (noun) hormone secreted by the posterior pituitary gland (trade name Pitressin) and also by nerve endings in the hypothalamus; affects blood pressure by stimulating capillary muscles and reduces urine flow by affecting reabsorption of water by kidney tubules | Synonyms: ADH, antidiuretic hormone, Pitressin |
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| vein | (noun) one of the horny ribs that stiffen and support the wing of an insect | Synonyms: nervure |
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| (noun) a blood vessel that carries blood from the capillaries toward the heart | Synonyms: vena, venous blood vessel |
| (noun) a distinctive style or manner | - |
| (noun) a layer of ore between layers of rock | Synonyms: mineral vein |
| (noun) any of the vascular bundles or ribs that form the branching framework of conducting and supporting tissues in a leaf or other plant organ | Synonyms: nervure |
| verdin | (noun) very small yellow-headed titmouse of western North America | Synonyms: Auriparus flaviceps |
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| vermin | (noun) any of various small animals or insects that are pests; e.g. cockroaches or rats | - |
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| (noun) an irritating or obnoxious person | Synonyms: varmint |
| vervain | (noun) any of numerous tropical or subtropical American plants of the genus Verbena grown for their showy spikes of variously colored flowers | Synonyms: verbena |
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| villain | (noun) a wicked or evil person; someone who does evil deliberately | Synonyms: scoundrel |
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| (noun) the principal bad character in a film or work of fiction | Synonyms: baddie |
| villein | (noun) (Middle Ages) a person who is bound to the land and owned by the feudal lord | Synonyms: helot, serf |
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| violin | (noun) bowed stringed instrument that is the highest member of the violin family; this instrument has four strings and a hollow body and an unfretted fingerboard and is played with a bow | Synonyms: fiddle |
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| viomycin | (noun) a basic polypeptide antibiotic (trade name Viocin) administered intramuscularly (along with other drugs) in the treatment of tuberculosis | Synonyms: Viocin |
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| virgin | (noun) a person who has never had sex | - |
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| vitamin | (noun) any of a group of organic substances essential in small quantities to normal metabolism | - |
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| wain | (noun) large open farm wagon | - |
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| warfarin | (noun) an anticoagulant (trade name Coumadin) use to prevent and treat a thrombus or embolus | Synonyms: Coumadin |
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| washbasin | (noun) a basin for washing the hands | Synonyms: handbasin, lavabo, wash-hand basin, washbowl |
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| (noun) a bathroom sink that is permanently installed and connected to a water supply and drainpipe; where you can wash your hands and face | Synonyms: basin, lavatory, washbowl, washstand |
| wastebin | (noun) a bin that holds rubbish until it is collected | Synonyms: ash-bin, ash bin, ashbin, ashcan, dustbin, garbage can, trash barrel, trash bin, trash can |
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| waterskin | (noun) a container of skin for holding water | Synonyms: water skin |
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| welkin | (noun) the apparent surface of the imaginary sphere on which celestial bodies appear to be projected | Synonyms: celestial sphere, empyrean, firmament, heavens, sphere, vault of heaven |
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| whin | (noun) any of various hard colored rocks (especially rocks consisting of chert or basalt) | Synonyms: whinstone |
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| (noun) small Eurasian shrub having clusters of yellow flowers that yield a dye; common as a weed in Britain and the United States; sometimes grown as an ornamental | Synonyms: dyer's-broom, dyer's greenweed, dyeweed, Genista tinctoria, greenweed, woadwaxen, woodwaxen |
| (noun) very spiny and dense evergreen shrub with fragrant golden-yellow flowers; common throughout western Europe | Synonyms: furze, gorse, Irish gorse, Ulex europaeus |
| win | (noun) a victory (as in a race or other competition) | - |
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| (noun) something won (especially money) | Synonyms: profits, winnings |
| wineskin | (noun) an animal skin (usually a goatskin) that forms a bag and is used to hold and dispense wine | - |
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| woodgrain | (noun) texture produced by the fibers in wood | Synonyms: wood grain, woodiness |
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| yanquapin | (noun) water lily of eastern North America having pale yellow blossoms and edible globular nutlike seeds | Synonyms: American lotus, Nelumbo lutea, water chinquapin |
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| yellowfin | (noun) may reach 400 pounds; worldwide in tropics | Synonyms: Thunnus albacares, yellowfin tuna |
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| yin | (noun) the dark negative feminine principle in Chinese dualistic cosmology | - |
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| zayin | (noun) the 7th letter of the Hebrew alphabet | - |
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| zeaxanthin | (noun) yellow carotenoid (isomeric with lutein and occurs widely with it) that is the main pigment in yellow Indian corn | - |
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| zeppelin | (noun) a large rigid dirigible designed to carry passengers or bombs | Synonyms: Graf Zeppelin |
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| zootoxin | (noun) a toxin resembling bacterial toxins in its antigenic properties that is found in the fluids of certain animals | Synonyms: animal toxin |
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