Definition of: omentum

(ō·men′təm) noun plural ·ta (-tə) Anat.
A free fold of the peritoneum passing between certain of the viscera. The small omentum passes from the lesser curvature of the stomach to the liver; the great omentum from the lower border of the stomach to the transverse colon, lying in front of the intestines like an apron. [<NL <L, a membrane enclosing the bowels]
—o·men′tal adjective