Wordnet 3.0
ADJECTIVE (2)
1. 
 characterized by or of the nature of or using mimesis; 
- Example: "a mimetic dance"- Example: "the mimetic presentation of images"2. 
 exhibiting mimicry; 
- Example: "mimetic coloring of a butterfly"- Example: "the mimetic tendency of infancy"- R.W.Hamilton
The Collaborative International Dictionary of English v.0.48:
Mimetic \Mi*met"ic\ (?; 277), Mimetical \Mi*met"ic*al\, [Gr. ?,
   fr. ? to imitate.]
   [1913 Webster]
   1. Apt to imitate; given to mimicry; imitative.
      [1913 Webster]
   2. (Biol.) Characterized by mimicry; -- applied to animals
      and plants; as, mimetic species; mimetic organisms. See
      Mimicry.
      [1913 Webster]
WordNet (r) 3.0 (2006):
mimetic
    adj 1: characterized by or of the nature of or using mimesis; "a
           mimetic dance"; "the mimetic presentation of images"
    2: exhibiting mimicry; "mimetic coloring of a butterfly"; "the
       mimetic tendency of infancy"- R.W.Hamilton
Moby Thesaurus II by Grady Ward, 1.0:
29 Moby Thesaurus words for "mimetic":
   apish, delineatory, depictive, echoic, embodying, emulative,
   figurative, graphic, ideographic, illustrational, illustrative,
   imitative, incarnating, limning, mimic, mimish, onomatopoeic,
   onomatopoetic, personifying, pictographic, pictorial, portraying,
   representational, representative, representing, simulative,
   symbolizing, typifying, vivid