Peritoneal (adjective)

1. Relating to or affecting the peritoneum, the lining of the abdominal cavity.
2. Of or relating to the peritoneum, which is the membrane lining the walls of the abdominal and pelvic cavities and covering most of the abdominal organs.

Origin:

From new latin peritoneum, from greek peritonaion (περιτοναῖον), from peritonaion (περιτόναιον) "membrane surrounding the abdome.n"

Examples:

1. Peritoneal cancer is a type of cancer that affects the lining of the abdominal cavity.
2. Peritoneal dialysis is a treatment for kidney failure that uses the peritoneum to filter waste products from the blood.
3. Peritoneal lavage is a surgical procedure in which the peritoneal cavity is washed with a sterile solution.
4. Peritoneal cavity is the space within the abdomen that is lined by the peritoneum and contains the abdominal organs.
5. Peritoneal adhesions are bands of scar tissue that can form between the organs in the abdominal cavity.