def of pon medical dictionary
pons. 1. any slip of tissue connecting two parts of an organ. 2. that part of the central nervous system lying between the medulla oblongata and the midbrain, ventral to the cerebellum; see brainstem.. [TA] In neuroanatomy, the pons varolii or pons cerebelli; that part of the brainstem between the medulla oblongata caudally and the mesencephalon rostrally, composed of the basilar part of pons and the tegmentum of pons.