Source : Webster's Revised Unabridged Dictionary (1913)

Materially \Ma*te"ri*al*ly\, adv.
   1. In the state of matter.

            I do not mean that anything is separable from a body
            by fire that was not materially pre["e]xistent in
            it.                                   --Boyle.

   2. In its essence; substantially.

            An ill intention is certainly sufficient to spoil .
            . . an act in itself materially good. --South.

   3. In an important manner or degree; essentaily; as, it
      materially concern us to know the real motives of our
      actions.

Source : WordNet®

materially
     adv 1: with respect to material aspects; "psychologically similar
            but materially different"
     2: to a significant degree; "it aided him materially in winning
        the argument"