(ichthyology) A fin, usually paired, located ventrally below the pectoral fins of a fish.

plural of ventral fin

In a dorso-ventral direction; from the back to the front.

The ventral tegmentum

plural of ventral tegmental area

plural of ventral nerve cord

(anatomy, invertebrates) A major structure of the invertebrate central nervous system; the functional equivalent of the vertebrate spinal cord.