V
vaccine. The modified virus of any disease, which, when inoculated, protects against the action of the unmodified virus.
vaccination. The injection of a killed culture of a specific bacterium as a means of prophylaxis or cure of the disease caused by that microorganism.
valgus. One who is bow-legged or has knock-knees.
varix. An enlarged and tortuous vein, artery or lymphatic vessel.
vasoconstrictor. An agent or a nerve which causes narrowing of the blood vessels.
vasodilator. An agent or a nerve which causes dilatation of the blood vessels.
vein. A blood-vessel carrying blood toward the heart.
venous. Pertaining to a vein.
verruca (pr. verrucae). Wart.
vertebra. A bony segment of the spinal column.
vesicle. A small blister or sac containing serum.
villus (pl. villi). A minute projection from the surface, especially of a mucous membrane.
viscus (viscera). An internal organ especially of the abdominal cavity.