Source : Webster's Revised Unabridged Dictionary (1913)

Economically \E`co*nom"ic*al*ly\, adv.
   With economy; with careful management; with prudence in
   expenditure.

Source : WordNet®

economically
     adv 1: with respect to economic science; "economically this
            proposal makes no sense"
     2: with respect to the economic system; "economically the
        country is worse off"