English

Noun

abdominal fin ‎(plural abdominal fins)

1. (ichthyology) One of the posterior paired fins of fishes; pelvic fin; ventral fin.^[1]

Translations

References

1. ↑ Philip Babcock Gove (editor), Webster's Third International Dictionary of the English Language, Unabridged (G. & C. Merriam Co., 1976 [1909], ISBN 0-87779-101-5), page 2