Search Result for "peritoneum": 
Wordnet 3.0

NOUN (1)

1. a transparent membrane that lines the abdominal cavity in mammals and covers most of the viscera;


The Collaborative International Dictionary of English v.0.48:

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]
WordNet (r) 3.0 (2006):

peritoneum n 1: a transparent membrane that lines the abdominal cavity in mammals and covers most of the viscera