n. In mammals, the serous membrane lining the cavity of the abdomen and that is folded over the viscera.
n. In animals, the membrane lining the coelom cavity.
the GNU version of the Collaborative International Dictionary of English
n. 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.
The Century Dictionary and Cyclopedia
n. The membrane lining the abdominal cavity and investing its viscera.
n. In brachiopods, an investment of the alimentary canal, by which the latter is suspended in the perivisceral cavity as by a mesentery.
n. In entomology, the outer coat of the digestive tube of an insect.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
n. a transparent membrane that lines the abdominal cavity in mammals and covers most of the viscera
Word Usage
"The peritoneum is the mesothelial tissue that covers most of the organs in the abdominal cavity."