Source : Webster's Revised Unabridged Dictionary (1913)

Astrologic \As`tro*log"ic\, Astrological \As`tro*log"ic*al\, a.
   [Gr. 'astrologiko`s.]
   Of or pertaining to astrology; professing or practicing
   astrology. ``Astrologic learning.'' --Hudibras.
   ``Astrological prognostication.'' --Cudworth. --
   {As`tro*log"ic*al*ly}, adv.

Source : WordNet®

astrological
     adj : relating to or concerned with astrology; "astrological
           chart"