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he·mo·pneu·mo·tho·rax
variants:
or chiefly British haemopneumothorax \ ˌhē-mə-ˌn(y)ü-mə-ˈthō(ə)r-ˌaks, -ˈthȯ(ə)r- 
\
\ plural hemopneumothoraxes or hemopneumothoraces\ -ˈthōr-ə-ˌsēz, -ˈthȯr- \
\Medical Definition of hemopneumothorax
: the accumulation of blood and air in the pleural cavity
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