English
peritonitis
From peritoneum + -itis.
A compound of peritoneum + -itis
Proto-Indo-European *ten- ‘stretch’
…
Ancient Greek περίτονος ‘covered with something stretched over’
Ancient Greek περιτόναιος ‘stretched or strained over’
Ancient Greek περιτόναιον ‘membrane which contains the lower viscera’
Latin peritonaeum
English peritoneum
Today it means
noun Inflammation of the peritoneum, especially when caused by an infectious organism introduced into the abdominal cavity.
Language periods are conventional ranges, not dates for this word.
Etymograph / peritonitis