abdomen abdomen /ˈæbdəmən/

noun

1. () The region of the body of a vertebrate between the thorax and the pelvis  ( venter , abdomen , stomach , belly )
   the region of the body of a vertebrate between the thorax and the pelvis
    The pain in my abdomen has been bothering me for days
   The pain in my abdomen has been bothering me for days
   
   
2. The cavity containing the major viscera; in mammals it is separated from the thorax by the diaphragm  ( abdomen , abdominal cavity )
   the cavity containing the major viscera; in mammals it is separated from the thorax by the diaphragm