hydropericardium
noun
hy·dro·peri·car·di·um
ˌhī-drō-ˌper-ə-ˈkär-dē-əm 
plural hydropericardia
-dē-ə
: an excess of watery fluid in the pericardial cavity
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“Hydropericardium.” Merriam-Webster.com Medical Dictionary, Merriam-Webster, https://www.merriam-webster.com/medical/hydropericardium. Accessed 21 Dec. 2024.
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