ventral fin

noun

pelvic fin.

Origin of ventral fin

First recorded in 1745–55

Words nearby ventral fin

ventouse, ventr-, ventrad, ventral, ventral column of spinal cord, ventral fin, ventral horn, ventral plate, ventral plate of neural tube, ventral root, ventral thalamic peduncle

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