heterocercal

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adjective het·ero·cer·cal \ˌhe-tə-rō-ˈsər-kəl\

Definition of heterocercal

  1. 1 of a fish tail fin :  having the upper lobe larger than the lower with the vertebral column extending into the upper lobe

  2. 2 :  having or relating to a heterocercal tail fin

1838

First Known Use of heterocercal

1838


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