ab·do·men [ab-duh-muhn, ab-doh-] noun

1. Anatomy, Zoology.
a. the part of the body of a mammal between the thorax and the pelvis; belly.
b. the cavity of this part of the body containing the stomach, intestines, etc.
c. (in nonmammalian vertebrates) a region of the body corresponding to, but not coincident with, this part or cavity.
2. Entomology.
the posterior section of the body of an arthropod, behind the thorax or the cephalothorax.


1535–45; (< Middle French ) < Latin abdōmen belly

Related forms

post·ab·do·men, noun

Other Meanings


abdomen ab·do·men (āb'də-mən, āb-dō'mən)
The part of the body that lies between the chest and the pelvis and encloses the stomach, intestines, liver, spleen, and pancreas. Also called belly, venter.


abdomen (āb'də-mən)
In vertebrates, the portion of the body between the thorax and pelvis, containing the stomach, intestines, liver, and other organs. In mammals, the abdomen is separated from the thorax by the diaphragm.

In arthropods, the last, most posterior segment of the body.


abdomen [( ab -duh-muhn, ab- doh -muhn)]

The part of the body between the thorax (chest) and pelvis that encloses the organs of the abdominal cavity; the belly.