Peritoneum vs. Omentum

(anatomy) In mammals, the serous membrane lining the cavity of the abdomen and that is folded over the viscera.

(zoology) In animals, the membrane lining the coelom cavity.

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.

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

The peritoneum is the serous membrane forming the lining of the abdominal cavity or coelom in amniotes and some invertebrates, such as annelids. It covers most of the intra-abdominal (or coelomic) organs, and is composed of a layer of mesothelium supported by a thin layer of connective tissue.

(anatomy) Either of two folds of the peritoneum that support the viscera.

A free fold of the peritoneum, or one serving to connect viscera, support blood vessels, etc.; an epiploön.

a fold of peritoneum supporting the viscera