adjective iso·cer·cal

Definition of isocercal

  1. 1 :  having symmetrical upper and lower lobes and a gradually tapering vertebral column —used of the tail fin of a fish

  2. 2 :  having or relating to an isocercal tail fin


noun, plural


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Origin and Etymology of isocercal

is- + -cercal

Seen and Heard

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to cast off or become cast off

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