American English

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 the Oxford Advanced Learner's Dictionary entry: peritoneum