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peritoneum

[ per-i-tuh-nee-uhm ]
/ 藢p蓻r 瑟 t蓹藞ni 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-tuh-nee-uh]. /藢p蓻r 瑟 t蓹藞ni 蓹/. Anatomy.
the serous membrane lining the abdominal cavity and investing its viscera.
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Origin of peritoneum

First recorded in 1535鈥45; from Late Latin, variant spelling of peritonaeum, from Greek perit贸naion, noun use of neuter of perit贸naios, synonymous derivative of per铆tonos 鈥渟tretched round鈥; see peri-, tone, -eous

OTHER WORDS FROM peritoneum

per路i路to路ne路al, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, 漏 Random House, Inc. 2022

How to use peritoneum in a sentence

British Dictionary definitions for peritoneum

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

Scientific definitions for peritoneum

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.
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