The American Heritage® Dictionary of the English Language, 4th Edition
n. A hereditary disease in which numerous polyps erupt in a part of the body, especially on the lining of the colon and rectum, and often become malignant.
n. A hereditary disease characterised by numerous polyps that erupt in various parts of the body, especially the colon
Word Usage
"Because Familial adenomatous polyposis is hereditary, the risk of developing the features associated with FAP can be passed from generation to generation in a family."