ventral fin

/ˌvɛntrəl fɪn/
IPA guide

Other forms: ventral fins

Definitions of ventral fin
  1. noun
    either of a pair of fins attached to the pelvic girdle in fishes that help control the direction of movement; correspond to hind limbs of a land vertebrate
    synonyms: pelvic fin
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    type of:
    fin
    organ of locomotion and balance in fishes and some other aquatic animals
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