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Vaseline trademark for petrolatum.
vaso- blood vessel. [2 definitions]
vasoconstriction constriction or narrowing of a blood vessel or vessels, as in response to a nerve impulse.
vasoconstrictor a nerve or drug that causes constriction of the blood vessels. [2 definitions]
vasodilatation see vasodilation.
vasodilation dilation or widening of a blood vessel or vessels, as in response to a nerve impulse.
vasodilator a nerve or drug that causes dilation of the blood vessels. [2 definitions]
vasoinhibitor a drug or other agent that inhibits the action of the vasomotor nerves.
vasomotor controlling the width of blood vessels, as some nerves or certain drugs; causing vasoconstriction or vasodilatation.
vasopressin a hormone secreted by the posterior lobe of the pituitary gland which increases blood pressure by causing capillaries to constrict.
vasopressor causing a rise in blood pressure by constricting the blood vessels. [2 definitions]
vassal in the Middle Ages, one who was granted the use of land in return for allegiance and service to a feudal lord. [2 definitions]
vassalage the state or condition of being a vassal. [2 definitions]
vast immense in size or area. [3 definitions]
VAT abbreviation of "value-added tax," a sales tax paid on the value added to products and services at each stage of manufacturing and distribution.
vat a very large container, such as a barrel, tub, or tank, used for holding or storing liquids, esp. at stages in a manufacturing process. [2 definitions]
vat dye a colorfast dye applied to cloth in a soluble form and then oxidized to an insoluble form in the cloth.
vatic of, relating to, or characteristic of a prophet.
Vatican the papal residence in Vatican City; Vatican Palace. [4 definitions]
Vatican City an independent state within Rome, Italy, that is ruled by the pope.
vatu the chief monetary unit of Vanuatu.