Relating to both pleura and peritoneum.
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pleu·ro·peri·to·ne·al -.per-ət-ən-'ē-əl adj of or relating to the pleura and the peritoneum
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pleu·ro·peri·to·ne·al (ploor″o-per″ĭ-to-neґəl) pertaining to or communicating between the pleura and the peritoneum, or the pleural and peritoneal cavities.Medical dictionary. 2011.