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MEMBRANA ABDOMINIS
The smoothserousmembrane which lines the cavity of the abdomen, or the intactbodycavity when there is no diaphragm, and, turning back, surrounds the viscera, forming a closed, or almost closed, sac.
Alternative forms: peritonaeum.
Origin: L. Peritoneum, peritonaeum, Gr, fr. To stretch all near or over; near + to stretch.
Source: Websters Vocabulary