Source : Webster's Revised Unabridged Dictionary (1913)

Theurgic \The*ur"gic\, Theurgical \The*ur"gic*al\, a. [L.
   theurgicus, Gr. ?: cf. F. th['e]urgique.]
   Of or pertaining to theurgy; magical.

   {Theurgic hymns}, songs of incantation.