Definition of retroperitoneum in English:

retroperitoneum

noun

Anatomy
  • The space between the parietal peritoneum and the posterior abdominal wall.

Origin

Mid 19th century. From retro- + peritoneum, after German Retroperitoneum.

Pronunciation

retroperitoneum

/ˌrɛtrəʊˌpɛrɪtəˈniːəm/