Abdomen meaning in Medicine
Abdomen is known as the belly, the part of the body that contains all of the structures between the chest and the pelvis. The abdomen is said to be separated anatomically from the chest by the diaphragm, the powerful muscle spanning the body cavity below the lungs.
The abdomen includes organs such as the stomach, small intestine, colon, rectum, liver, spleen, pancreas, kidneys, appendix, and bladder.
This is one of the best and straight-forward medical definitions for abdomen.