Abdominal, ab-dom'-in-al, a

situated in or pertaining to the abdomen. Abdominal ring, an oblong tendinous ring in each groin. Abdominal is applied to a group of fishes, in which the ventral fins are placed behind the pectoral. The roach, salmon, pike, mullet, herring, carp, and flying-fish belong to this order [Ichthy.]