Definition of peritoneum in English:

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Pronunciation: /ˌpɛrɪtəˈniːəm/

noun (plural peritoneums or peritonea /ˌpɛrɪtəˈniːə/)

The serous membrane lining the cavity of the abdomen and covering the abdominal organs.
Example sentences
  • The diaphragm is then bluntly dissected away from the parietal peritoneum, leaving the peritoneum behind.
  • There was no extension into the endometrial cavity, nor into the pelvic peritoneum.
  • This treatment uses the lining of the peritoneum to act as the filter.



Pronunciation: /ˌpɛrɪtəˈniːəl/
Example sentences
  • The concern is that additional fluid would cause further distension and leakage of bowel contents into the peritoneal cavity.
  • A peritoneal dialysis catheter is placed under sterile conditions.
  • If no cells are present in this peritoneal mucous, the prognosis is excellent.


Late Middle English: via late Latin from Greek peritonaion, from peritonos 'stretched round', from peri- 'around' + -tonos 'stretched'.

Words that rhyme with peritoneum

athenaeum, atheneum, coliseum, Liam, lyceum, mausoleum, museum, propylaeum, Te Deum

For editors and proofreaders

Line breaks: peri¦ton|eum

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