ADJECTIVE (2)

1. made different (especially in the course of development) or shown to be different;
- Example: "the differentiated markings of butterflies"
- Example: "the regionally differentiated results"

2. exhibiting biological specialization; adapted during development to a specific function or environment;

The Collaborative International Dictionary of English v.0.48:

differentiated \differentiated\ adj.
   1. made different (especially in the course of development)
      or shown to be different; as, the differentiated markings
      of butterflies; the regionally differentiated results.
      Opposite of undifferentiated.
      [WordNet 1.5]

   2. (Biol.) exhibiting biological specialization; adapted
      during development to a specific function or environment;
      as, differentiated cells.
      [WordNet 1.5]

WordNet (r) 3.0 (2006):

differentiated
    adj 1: made different (especially in the course of development)
           or shown to be different; "the differentiated markings of
           butterflies"; "the regionally differentiated results"
           [ant: undifferentiated, uniform]
    2: exhibiting biological specialization; adapted during
       development to a specific function or environment