abdomen abditory • abdominal · · · Info · Definitions · Synonyms · Characters · · abdomen · · Text Latin · · Script 7 · · Length Definitions · · · (noun) the region of the body of a vertebrate between the thorax and the pelvis. Synonyms: venter, stomach, belly. · · Noun Definition 1 (noun) the cavity containing the major viscera; in mammals it is separated from the thorax by the diaphragm. Synonyms: abdominal cavity. · · Noun Definition 2 Synonyms · · · venter · · Synonym 1 stomach · · Synonym 2 belly · · Synonym 3 abdominal cavity · · Synonym 4 Characters · · a latin small letter a U+0061 b latin small letter b U+0062 d latin small letter d U+0064 e latin small letter e U+0065 m latin small letter m U+006D n latin small letter n U+006E o latin small letter o U+006F