What does peritoneal mean?
Peritoneal is an anatomical adjective meaning related to the peritoneum, the thin membrane that lines the abdominal cavity and covers many abdominal organs. It is used in medical contexts to describe the peritoneal cavity, inflammation or infection of the lining, peritoneal dialysis, and the spread of disease within the abdominal cavity. Because it identifies a precise anatomical location, it is more informative than simply saying abdominal in clinical descriptions. The word is also used in phrases such as intraperitoneal, referring to something within the peritoneal cavity. Understanding the term is useful in medicine, biology, and health communication, where accurate descriptions of body structures and disease processes depend on precise terminology.
adjectiveRelating to or situated in the peritoneum, the membrane lining the abdominal cavity and covering many of its organs.
- Relating to the peritoneum or the abdominal cavity it lines.
"The surgeon carefully inspected the peritoneal cavity before proceeding with the operation."
"A peritoneal catheter was inserted to remove fluid from the abdomen."
"The scan revealed signs of peritoneal inflammation."
The word peritoneal is a geographical label for the body's inner abdominal landscape: it names what belongs to the membrane-lined cavity beneath the diaphragm.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Where does peritoneal come from?
The word derives from the Latin peritoneum, meaning the membrane surrounding the abdominal organs, which in turn comes from Greek peritonaion, a derivative of peritoneos, meaning stretched around or surrounding. English adopted the anatomical noun in the early 17th century and developed the adjective peritoneal from the same Latin root. The term is related cognately to modern anatomical forms such as peritoneum and to derivatives describing structures or procedures involving the abdominal lining.
Related word forms
How peritoneal is actually used
The term is primarily used in medical and anatomical contexts. It is typically more specific than the general term abdominal and should not be used for structures outside the peritoneal cavity.
Easily confused with peritoneal
Pleural relates to the pleura, the membrane surrounding the lungs, whereas peritoneal relates to the peritoneum in the abdomen.
Perineal relates to the perineum, the area between the anus and the external genitalia, whereas peritoneal relates to the abdominal lining.