| heterocercal |
| heterocercal | (adj) possessing a tail with the upper lobe larger than the lower and with the vertebral column prolonged into the upper lobe, Ant. homocercal |
| heterocercal fin | (n) a tail fin with unequal lobes in which the vertebral column turns upward into the larger lobe as in sharks, Ant. homocercal fin |
| Heterocercal | a. [ Hetero- + Gr. &unr_; tail. ] (Anat.) Having the vertebral column evidently continued into the upper lobe of the tail, which is usually longer than the lower one, as in sharks. [ 1913 Webster ] |
