[ven.tral] adj [F, fr. L ventralis, fr. ventr-, venter] (1739) 1 a: of or relating to the belly: abdominal b: being or located near or on the anterior or lower surface of an animal opposite the back
2: being or located on the lower surface of a dorsiventral plant structure -- ven.tral.ly adv
[2]ventral n (1834): a ventral part (as a scale or fin)