Definition

A thin, smooth membrane that covers the inside of the abdomen and surrounds the organs within it.

Example

The surgeon carefully examined the peritoneum during the operation.

Conversation

Did you know that the peritoneum is a crucial part of our abdominal cavity?

I had no idea! What does it actually do?

It lines the walls of the abdomen and helps protect the organs inside.

That’s really interesting! I never thought about how important it is.

Synonyms & Antonyms

Root Explanation

Peritoneum → It is derived from the Greek word "peritonaion" (meaning to stretch around) which comes from "peri-" (meaning around) and "teinein" (meaning to stretch). The term refers to the membrane that stretches around the abdominal cavity.

Memory Tip

Think of a membrane that 'stretches around' ('peri-') the organs in the abdomen, which helps you remember that 'peritoneum' is the lining surrounding the abdominal cavity.

Visually Confused Words