noun
an inflammation of the peritoneum, the membrane lining the abdominal cavity and surrounding the internal organs
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Peritonitis is a serious condition characterized by inflammation of the peritoneum lining the abdomen.
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My uncle was hospitalized with peritonitis after experiencing severe abdominal pain.
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Dude, peritonitis is no joke - it can mess you up big time.
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The political scandal spread through the government like a case of peritonitis, causing chaos and turmoil.