What does "abdominal" mean?

Abdominal: (Zoöl.) Having abdominal fins; belonging to the Abdominales; as, abdominal fishes. Abdominal ring (Anat.), a fancied ringlike opening on each side of the abdomen, external and superior to the pubes; -- called also inguinal ring.

Additional senses

  1. 2.A fish of the group Abdominales.

Sources