Source : Webster's Revised Unabridged Dictionary (1913)

Dendritic \Den*drit"ic\, Dendritical \Den*drit"ic*al\, a.
   Pertaining to a dendrite, or to arborescent crystallization;
   having a form resembling a shrub or tree; arborescent.

Source : WordNet®

dendritic
     adj : (neuroscience) of or relating to or resembling a dendrite;
           "dendritic fiber"