Source : Webster's Revised Unabridged Dictionary (1913)

Hegemonic \Heg`e*mon"ic\, Hegemonical \Heg`e*mon"ic*al\, a. [Gr.
   ?. See {Hegemony}.]
   Leading; controlling; ruling; predominant. ``Princelike and
   hegemonical.'' --Fotherby.