1 Charting the Labor Market (monthly)âa package of charts featuring data from the Current Population Survey. 2  Subscribe to the BLS News Service -- receive The Employment Situation news releases by e-mail.
Medical Definition of peritoneal cavity. : a space formed when the parietal and visceral layers of the peritoneum spread apart.
Peritoneal is a term referring or relating to a structure in the abdomen known as the peritoneum. Retroperitoneal, therefore, is a term meaning behind, in back of or posterior to the peritoneum, which is a membrane that serves as a lining for the anatomical space in the abdominal cavity.