hydropneumothorax
noun
hy·dro·pneu·mo·tho·rax
ˌhī-drə-ˌn(y)ü-mə-ˈthō(ə)r-ˌaks, -ˈthȯ(ə)r- 
plural hydropneumothoraxes or hydropneumothoraces
-ˈthōr-ə-ˌsēz, -ˈthȯr-
: the presence of gas and serous fluid in the pleural cavity
called also pneumohydrothorax
Cite this Entry
“Hydropneumothorax.” Merriam-Webster.com Medical Dictionary, Merriam-Webster, https://www.merriam-webster.com/medical/hydropneumothorax. Accessed 31 Oct. 2025.
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