polyserositis

noun
poly·​se·​ro·​si·​tis | \ -ˌsir-ə-ˈsīt-əs How to pronounce polyserositis (audio) \

Medical Definition of polyserositis

: inflammation of several serous membranes (as the pleura, pericardium, and peritoneum) at the same time

called also Concato's disease

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