| ununtrium | (noun) a radioactive transuranic element, with atomic number 113 | Synonyms: atomic number 113, element 113, Uut |
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| unvitrified | (adjective) (of ceramics) lacking a vitreous finish | - |
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| utricle | (noun) a small pouch into which the semicircular canals open | Synonyms: utriculus |
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| utriculus | (noun) a small pouch into which the semicircular canals open | Synonyms: utricle |
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| vasoconstriction | (noun) decrease in the diameter of blood vessels | - |
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| vasoconstrictive | (noun) any agent that causes a narrowing of an opening of a blood vessel: cold or stress or nicotine or epinephrine or norepinephrine or angiotensin or vasopressin or certain drugs; maintains or increases blood pressure | Synonyms: pressor, vasoconstrictor |
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| vasoconstrictor | (noun) any agent that causes a narrowing of an opening of a blood vessel: cold or stress or nicotine or epinephrine or norepinephrine or angiotensin or vasopressin or certain drugs; maintains or increases blood pressure | Synonyms: pressor, vasoconstrictive |
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| ventricle | (noun) a chamber of the heart that receives blood from an atrium and pumps it to the arteries | Synonyms: heart ventricle |
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| (noun) one of four connected cavities in the brain; is continuous with the central canal of the spinal cord and contains cerebrospinal fluid | - |
| ventricose | (adjective) having a swelling on one side | Synonyms: ventricous |
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| ventricous | (adjective) having a swelling on one side | Synonyms: ventricose |
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| ventricular | (adjective) of or relating to a ventricle (of the heart or brain) | - |
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| ventriculus | (noun) thick-walled muscular pouch below the crop in many birds and reptiles for grinding food | Synonyms: gastric mill, gizzard |
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| ventriloquism | (noun) the art of projecting your voice so that it seems to come from another source (as from a ventriloquist's dummy) | Synonyms: ventriloquy |
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| ventriloquist | (noun) a performer who projects the voice into a wooden dummy | - |
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| ventriloquy | (noun) the art of projecting your voice so that it seems to come from another source (as from a ventriloquist's dummy) | Synonyms: ventriloquism |
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| viscometric | (adjective) of or relating to the measurement of viscosity | Synonyms: viscosimetric |
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| viscosimetric | (adjective) of or relating to the measurement of viscosity | Synonyms: viscometric |
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| vitrification | (noun) the process of becoming vitreous | - |
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| (noun) a vitrified substance; the glassy result of being vitrified | - |
| vitrified | (adjective) (of ceramics) having the surface made shiny and nonporous by fusing a vitreous solution to it | Synonyms: glassy, vitreous |
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| vitrify | (verb) undergo vitrification; become glassy or glass-like | - |
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| (verb) change into glass or a glass-like substance by applying heat | - |
| vitrine | (noun) a glass container used to store and display items in a shop or museum or home | Synonyms: case, display case, showcase |
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| vitriol | (noun) abusive or venomous language used to express blame or censure or bitter deep-seated ill will | Synonyms: invective, vituperation |
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| (noun) (H2SO4) a highly corrosive acid made from sulfur dioxide; widely used in the chemical industry | Synonyms: oil of vitriol, sulfuric acid, sulphuric acid |
| (verb) subject to bitter verbal abuse | - |
| (verb) expose to the effects of vitriol or injure with vitriol | - |
| vitriolic | (adjective) of a substance, especially a strong acid; capable of destroying or eating away by chemical action | Synonyms: caustic, corrosive, erosive, mordant |
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| (adjective) harsh or corrosive in tone | Synonyms: acerb, acerbic, acid, acrid, bitter, blistering, caustic, sulfurous, sulphurous, virulent |
| vitriolically | (adverb) in a caustic vitriolic manner | Synonyms: caustically |
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| volumetric | (adjective) of or relating to measurement by volume | Synonyms: volumetrical |
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| volumetrical | (adjective) of or relating to measurement by volume | Synonyms: volumetric |
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| volumetrically | (adverb) with respect to volume | - |
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| weatherstrip | (noun) a narrow strip of material to cover the joint of a door or window to exclude the cold | Synonyms: weather strip, weather stripping, weatherstripping |
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| (verb) provide with weatherstripping | - |
| weatherstripping | (noun) a narrow strip of material to cover the joint of a door or window to exclude the cold | Synonyms: weather strip, weather stripping, weatherstrip |
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| wintriness | (noun) The state or quality of being suggestive or characteristic of winter; cold, stormy. | - |
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| yttrium | (noun) a silvery metallic element that is common in rare-earth minerals; used in magnesium and aluminum alloys | Synonyms: atomic number 39, Y |
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