'Ventral' definitions:

Definition of 'ventral'

From: WordNet
adjective
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" [ant: dorsal]
adjective
Nearest to or facing toward the axis of an organ or organism; "the upper side of a leaf is known as the adaxial surface" [syn: adaxial, ventral] [ant: abaxial, dorsal]

Definition of 'Ventral'

From: GCIDE
  • Ventral \Ven"tral\, a. [L. ventralis, fr. venter the belly; perhaps akin to G. wanst: cf. F. ventral.]
  • 1. (Anat.) Of, pertaining to, or situated near, the belly, or ventral side, of an animal or of one of its parts; hemal; abdominal; as, the ventral fin of a fish; the ventral root of a spinal nerve; -- opposed to dorsal. [1913 Webster]
  • 2. (Bot.) (a) Of or pertaining to that surface of a carpel, petal, etc., which faces toward the center of a flower. (b) Of or pertaining to the lower side or surface of a creeping moss or other low flowerless plant. Opposed to dorsal. [1913 Webster]
  • Ventral fins (Zool.), the posterior pair of fins of a fish. They are often situated beneath the belly, but sometimes beneath the throat.
  • Ventral segment. (Acoustics) See Loop, n., 5. [1913 Webster]