HETEROCERCAL FIN

Pronunciation (US): (GB):

Meaning:

A tail fin with unequal lobes in which the vertebral column turns upward into the larger lobe as in sharks

Classified under:

Nouns denoting animals

Hypernyms ("heterocercal fin" is a kind of...):

caudal fin; tail fin (the tail of fishes and some other aquatic vertebrates)

Antonym:

homocercal fin (symmetrical tail fin extending beyond the end of the vertebral column as in most bony fishes)