greater peritoneal sac(n = noun.body) peritoneal cavity - the interior of the peritoneum; a potential space between layers of the peritoneum;
is a kind of bodily cavity, cavity, cavum
has parts: bursa omentalis, lesser peritoneal cavity, omental bursa

air sac, amniotic sac, cul de sac, embryo sac, greater, greater antilles, greater burdock, greater butterfly orchid, greater celandine, greater knapweed, greater kudu, greater london, greater masterwort, greater new orleans bridge, greater new york, greater omentum, greater pectoral muscle, greater pichiciego, greater prairie chicken, greater rhomboid muscle, greater scaup, greater spearwort, greater stitchwort, greater sunda islands, greater water parsnip, greater whitethroat, greater yellowlegs, lacrimal sac, lesser peritoneal cavity, pericardial sac, peritoneal, peritoneal cavity, peritoneal inflammation, sac, sac fungus, spore sac, tear sac, to a greater extent, vitelline sac, yolk sac