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homocercal

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adjective ho·mo·cer·cal \ˌhō-mə-ˈsər-kəl, ˌhä-\

Definition of homocercal

1 of a fish tail fin : having the upper and lower lobes approximately symmetrical and the vertebral column ending at or near the middle of the base
2 : having or relating to a homocercal tail fin

First Known Use of homocercal

1838

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