ventral fin


noun

Origin of ventral fin

First recorded in 1745–55
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British Dictionary definitions for ventral fin

ventral fin


noun

another name for pelvic fin
any unpaired median fin situated on the undersurface of fishes and some other aquatic vertebrates
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012