PLEUROPERITONEUM

Pleu′ro‐per′i‐to‐ne″um (?), n. [[Pleuro- + peritoneum.]] (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. ☞ Peritoneum is now often used in the sense of pleuroperitoneum, the pleuræ being regarded as a part of the peritoneum, when the body cavity is undivided.