heterocercal fin 1
noundomain: animal
Princeton WordNet [ver.3.1]
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EnglishDefinition
a tail fin with unequal lobes in which the vertebral column turns upward into the larger lobe as in sharks
Hypernym
tail fin 3
noun
the tail of fishes and some other aquatic vertebrates
EnglishAntonym
homocercal fin 1
noun
symmetrical tail fin extending beyond the end of the vertebral column as in most bony fishes
