The Collaborative International Dictionary of English v.0.48:

Ganglionic \Gan`gli*on"ic\, a. [Cf. F. ganglionique.] (Anat.)
   Pertaining to, containing, or consisting of, ganglia or
   ganglion cells; as, a ganglionic artery; the ganglionic
   columns of the spinal cord.
   [1913 Webster]