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noun Pleuroperitoneum n. (Anat.) The pleural and peritoneal membranes, or the membrane lining the body cavity and covering the surface of the inclosed viscera; the peritoneum; used especially in the case of those animals in which the body cavity is not divided. Note: Peritoneum is now often used in the sense of pleuroperitoneum, the pleurae being regarded as a part of the peritoneum, when the body cavity is undivided.
Collaborative International Dictionary of English 0.48
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