peritonitis
Peritonitis (noun) means a painful inflammation of the peritoneum, the lining of the abdominal cavity, often caused by infection. Example: “The doctors suspected peritonitis after her sudden abdominal pain and fever.”
How to use peritonitis
Learner’s notesIn plain EnglishA medical term for a painful, infected inflammation inside the abdomen.
It's a formal medical term used mainly in clinical contexts.
The -itis ending on a medical word usually signals inflammation, as it does here.
Trace the full origin ↓Fill the gap
Can you complete this real example?
The doctors suspected _____ after her sudden abdominal pain and fever.
Etymology
Formed from peritoneum, the lining of the abdomen, combined with the suffix -itis, which marks a condition of inflammation.