Buy Me a Coffee at ko-fi.com

Peritoneum

serous membrane that forms the lining of the abdominal cavity or the coelom—it covers most of the intra-abdominal (or coelomic) organs—in amniotes and some invertebrates

Pronunciation
/ˌpɛrɪtnˈiəm/
/ˌpɛrɪtəˈniːəm/