Source : Webster's Revised Unabridged Dictionary (1913)

Granitic \Gra*nit"ic\, a. [Cf. F. granitique.]
   1. Like granite in composition, color, etc.; having the
      nature of granite; as, granitic texture.

   2. Consisting of granite; as, granitic mountains.

Source : WordNet®

granitic
     adj 1: hard as granite; "a granitic fist" [syn: {granitelike}, {rocklike},
             {stony}]
     2: having austere inflexibility; "a flinty manner"; "granitic
        morality"; "his unyielding mouth and glassy eyes"-
        Marchette Chute [syn: {flinty}, {unyielding}]