The Collaborative International Dictionary of English v.0.48:

Individualistic \In`di*vid`u*al*is"tic\, a.
   1. Of or pertaining to the individual or individualism.
      --London Athen[ae]um.
      [1913 Webster]

   2. exhibiting marked individuality[3] in thought and action;
      as, an individualistic way of dressing.

   Syn: individualist.
        [WordNet 1.5]

WordNet (r) 3.0 (2006):

individualistic
    adj 1: marked by or expressing individuality; "an
           individualistic way of dressing" [syn: individualist,
           individualistic]
    2: with minimally restricted freedom in commerce [syn:
       individualistic, laissez-faire(a)]