pneumoperitoneum
noun
pneu·mo·peri·to·ne·um
| \ -ˌper-ət-ᵊn-ˈē-əm
\
\
plural pneumoperitoneums
or pneumoperitonea\ -ˈē-ə
\
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Medical Definition of pneumoperitoneum
1
: an abnormal state characterized by the presence of gas (as air) in the peritoneal cavity
2
: the induction of pneumoperitoneum as a therapeutic measure or as an aid to radiography