(n.) The smooth serous membrane which lines the cavity of the abdomen or the whole body cavity when there is no diaphragm, and, turning back, surrounds the viscera, forming a closed or nearly closed, sac.
Webster's Revised Unabridged Dictionary
| APA | Webster's. (2011). peritoneum. Retrieved September 21, 2026, from http://smartdefine.org/peritoneum/definitions/2043962 |
| Chicago | Webster's. 2011. "peritoneum" http://smartdefine.org/peritoneum/definitions/2043962 (accessed September 21, 2026). |
| Harvard | Webster's 2011, peritoneum, Smart Define, viewed 21 September, 2026, <http://smartdefine.org/peritoneum/definitions/2043962>. |
| MLA | Webster's. "peritoneum" 27 May 2011. Web. 21 September 2026. <http://smartdefine.org/peritoneum/definitions/2043962> |