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1. (adj.) heterocercal
designating or having a tail fin in which the upper lobe is larger than the lower lobe, as in sharks.
Etymology: (1830–40; hetero - + Gk kérk(os) tail + -al1)
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| Definition of 'heterocercal' |
Princeton's WordNet |
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1. (adj) heterocercal
possessing a tail with the upper lobe larger than the lower and with the vertebral column prolonged into the upper lobe
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| Definition of 'heterocercal' |
Webster Dictionary |
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1. (adj) heterocercal
having the vertebral column evidently continued into the upper lobe of the tail, which is usually longer than the lower one, as in sharks
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Definitions of heterocercal 
