Protrusion of omentum and/or intestine through a defect or weakness in the abdominal wall while the skin remains intact.
See also: omphalocele
Source:
PAC, 2016, 88, 713. 'Glossary of terms used in developmental and reproductive toxicology (IUPAC Recommendations 2016)' on page 752 (https://doi.org/10.1515/pac-2015-1202)