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Definition of peritoneum noun from the Oxford Advanced American Dictionary

 

peritoneum

 noun
noun
NAmE//ˌpɛrətəˈniəm//
 
(pl. peritoneums or peritonea
NAmE//ˌpɛrətəˈniə//
 
) (anatomy)
 
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the membrane (= very thin layer of tissue) on the inside of the abdomen that covers the stomach and other organs
See peritoneum in the Oxford Advanced Learner's Dictionary
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