'Peritoneum' definitions:
Definition of 'peritoneum'
(from WordNet)
noun
A transparent membrane that lines the abdominal cavity in mammals and covers most of the viscera
Definition of 'Peritoneum'
From: GCIDE
- Peritoneum \Per`i*to*ne"um\, n. [L. peritoneum, peritonaeum, Gr. ?, ?, fr. ? to stretch all around or over; peri` around + ? to stretch.] (Anat.) The smooth serous membrane which lines the cavity of the abdomen, or the whole body cavity when there is no diaphragm, and, turning back, surrounds the viscera, forming a closed, or nearly closed, sac. [Written also periton[ae]um.] [1913 Webster]