Adjective
1. toward or on or near the belly (front of a primate or lower surface of a lower animal);
"the ventral aspect of the human body""the liver is somewhat ventral in position""ventral (or pelvic) fins correspond to the hind limbs of a quadruped"2. nearest to or facing toward the axis of an organ or organism;
"the upper side of a leaf is known as the adaxial surface"