Cholecystectomy /ˌkɔləsɪsˈtɛktəmi/, plural: cholecystectomies,) is the surgical removal of the gallbladder. Despite the development of non-surgical techniques, it is the most common method for treating symptomatic gallstones,
although there are other reasons for having this surgery done. Each
year more than 500,000 Americans have gallbladder surgery. Surgery
options include the standard procedure, called laparoscopic cholecystectomy, and an older more invasive procedure, called open cholecystectomy.
11. http://en.wikipedia.org/wiki/Cholecystectomy
It means you have had your gall bladder removed.