Source : Webster's Revised Unabridged Dictionary (1913)

Naturalistic \Nat`u*ral*is"tic\, a.
   1. Belonging to the doctrines of naturalism.

   2. Closely resembling nature; realistic. ``Naturalistic bit
      of pantomime.'' --W. D. Howells.

Source : WordNet®

naturalistic
     adj : representing what is real; not abstract or ideal; "realistic
           portraiture"; "a realistic novel"; "in naturalistic
           colors"; "the school of naturalistic writers" [syn: {realistic}]