Longman Dictionary of Contemporary English homepage

Date: 1700-1800
Origin: peritoneum 'inside wall of the abdomen' (16-21 centuries) (from Late Latin, from Greek) + -itis

peritonitis

 noun
     
Related topics: Illness and Disability
per‧i‧to‧ni‧tis [uncountable] technical
MI a serious condition in which the inside wall of someone's abdomen (=part around and below your stomach) becomes infected and painful
Definition from the Longman Dictionary of Contemporary English
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