ventral fin ventral • ventral horn · · · Info · Definitions · Synonyms · Characters · · ventral fin · · Text Common · · Latin · · Scripts 11 · · Length 3 · · Syllables Definitions · · · (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, ventral fin. · · Noun Definition 1 Synonyms · · · pelvic fin · · Synonym 1 Characters · · space U+0020 a latin small letter a U+0061 e latin small letter e U+0065 f latin small letter f U+0066 i latin small letter i U+0069 l latin small letter l U+006C n latin small letter n U+006E r latin small letter r U+0072 t latin small letter t U+0074 v latin small letter v U+0076