abdominal fin

noun

Definition of abdominal fin

: one of the posterior paired fins of fishes : pelvic fin

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First Known Use of abdominal fin

1775, in the meaning defined above

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The first known use of abdominal fin was in 1775

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Dictionary Entries Near abdominal fin

abdominal cavity

abdominal fin

abdominal pore

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Cite this Entry

“Abdominal fin.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/abdominal%20fin. Accessed 20 Oct. 2021.

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