pyopneumothorax
noun
pyo·pneu·mo·tho·rax
| \ -ˌn(y)ü-mə-ˈthō(ə)r-ˌaks, -ˈthȯ(ə)r-
\
\
plural pyopneumothoraxes
or pyopneumothoraces\ -ˈthō-rə-ˌsēz
\
\
Medical Definition of pyopneumothorax
: a collection of pus and air or other gas in the pleural cavity