[ per-i-tn-ee-uhm ]
/ 藢p蓻r 瑟 tn藞i 蓹m /
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noun, plural per路i路to路ne路ums, per路i路to路ne路a [per-i-tn-ee-uh]. /藢p蓻r 瑟 tn藞i 蓹/. Anatomy.
the serous membrane lining the abdominal cavity and investing its viscera.
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Origin of peritoneum

1535鈥45; <Late Latin, variant spelling of peritonaeum<Greek perit贸naion, noun use of neuter of perit贸naios, synonymous derivative of per铆tonos stretched round. See peri-, tone, -eous


Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, 漏 Random House, Inc. 2021

How to use peritoneum in a sentence

British Dictionary definitions for peritoneum

/ (藢p蓻r瑟t蓹藞ni藧蓹m) /

noun plural -nea (-藞ni藧蓹) or -neums
a thin translucent serous sac that lines the walls of the abdominal cavity and covers most of the viscera

Derived forms of peritoneum

peritoneal, adjective

Word Origin for peritoneum

C16: via Late Latin from Greek peritonaion, from peritonos stretched around, from peri- + tenein to stretch
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition 漏 William Collins Sons & Co. Ltd. 1979, 1986 漏 HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Medical definitions for peritoneum


n. pl. per鈥鈥o鈥e鈥
The serous sac consisting of mesothelium and a thin layer of irregular connective tissue that lines the abdominal cavity, covers most of the viscera contained therein, and itself forms two cavities, the peritoneal and the omental bursa, which are connected by the epiploic foramen.

Other words from peritoneum

per鈥瞚鈥o鈥eal adj.
The American Heritage庐 Stedman's Medical Dictionary Copyright 漏 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

Scientific definitions for peritoneum

[ p臅r鈥材-tn-膿蓹m ]

Plural peritonea
The membrane that lines the walls of the abdomen and the pelvis (called the parietal peritoneum) and encloses the abdominal and pelvic organs (called the visceral peritoneum.) The space between the two, the peritoneal cavity, fills with inflammatory cells and pus when the peritoneum becomes infected.
The American Heritage庐 Science Dictionary Copyright 漏 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.