Category: V

  • Vector

    Quantity described both in magnitude and in direction. A force vector is the application of force of a given magnitude in a given direction. Animal serving as a means of delivery of pollen or disease organisms. Plasmid or other self-replicating DNA molecule that transfers DNA between cells in nature or in recombinant DNA technology. The…

  • VDR (abbrev)

    Vitamin D receptor.  

  • VDO (abbrev)

    Vertical dimension of occlusion.    

  • Vat

    A large container used for storing or holding liquids, typically resins used in additive manufacturing processes.  

  • Vasodilation

    The process of increasing the lumen diameter of a blood vessel, especially an arteriole. Widening of the blood vessels causing increased volume of flow in those vessels. Relaxation of the vascular tree with the result of a fall in blood pressure. Widening of blood vessels, especially arteries, usually due to certain nerve impulses or drugs…

  • Vasodepressor

    Having the effect of lowering the blood pressure through reduction in peripheral resistance. An agent that causes vasodepression. Reducing circulation; agent that does so. Having a depressing influence on the circulation, lowering blood pressure by dilatation of blood vessels. Reducing blood pressure by dilating the blood vessels.  

  • Vasoconstrictor

    An agent that promotes decrease in blood vessel diameter. Used in dentistry to prolong anesthesia, and to reduce bleeding during surgical procedures. Drug that causes constriction of blood vessels. A substance that causes a narrowing of the blood vessels. Causes contraction in the walls of the blood vessels. A substance that constricts (i.e., narrows) blood…

  • Vasoconstriction

    A mechanism that results in a decrease in vessel lumen diameter, especially in arterioles, which in turn increases pressure within the vessel or creates a state of hemostasis. A decrease in the diameter of blood vessels, which decreases blood flow and raises blood pressure. Constriction of the vascular tree with the result of an increase…

  • Vascularization

    The process of infiltration by blood vessels; regarded as a critical support for the health and maintenance of living tissue or the healing of a graft. Process by which body tissue becomes vascular and develops capillaries. Development of new blood vessels in tissue such as the myocardium. The development of blood vessels (usually capillaries) within…

  • Vascular supply

    The source of blood to a tissue or organ.