Source : Webster's Revised Unabridged Dictionary (1913)

Theological \The`o*log"ic*al\, a. [L. theologicus, Gr. ?: cf. F.
   th['e]ologique.]
   Of or pertaining to theology, or the science of God and of
   divine things; as, a theological treatise. --
   {The`o*log"ic*al*ly}, adv.

Source : WordNet®

theological
     adj : of or relating to or concerning theology; "theological
           seminar"