Definitions of abdominal

1. A fish of the group Abdominales.

2. the muscles of the abdomen

3. Having abdominal fins; belonging to the Abdominales; as, abdominal fishes.

4. Pertaining to the lower cavity of the body.

5. Belonging to the lower belly.

6. Abdomen; structures, organs, or parts of organs situated in, on, or closely related to, the abdomen.