In general, an operation in which one of the folds of the peritoneum connects the stomach with other abdominal organs that is fastened to some other tissue, especially one in which it is used as a circulatory bridge to reduce congestion or to provide vascular nutrition: The omentumfixation is a sheet of fat that is covered by the peritoneum or a smooth transparent membrane that lines the abdomen and doubles back over the surfaces of the internal organs to form a continuous sac.

The greater omentumfixation is attached to the bottom edge of the stomach, and hangs down in front of the intestines while its other edge is attached to the transverse colon.

The lesser omentumfixation is attached to the top edge of the stomach, and extends to the under surface of the liver.