CVC: Commonly used abbreviation for a Central Venous Catheter, a catheter (tube) that is passed through a vein to end up in the thoracic (chest) portion of the vena cava (the large vein returning blood to the heart) or in the right atrium of the heart. Central venous catheters have a number of different uses. A central venous catheter allows concen... Found on http://www.medterms.com/script/main/art.asp?articlekey=19696