The Collaborative International Dictionary of English v.0.48:

delimitate \delimitate\ v.
   1. to determine the essential quality of.

   Syn: specify, define, delineate, delimit.
        [WordNet 1.5]

   2. to set, mark, or draw the boundaries of something.

   Syn: demarcate, delimit.
        [WordNet 1.5]

WordNet (r) 3.0 (2006):

delimitate
    v 1: determine the essential quality of [syn: specify,
         define, delineate, delimit, delimitate]
    2: set, mark, or draw the boundaries of something [syn:
       demarcate, delimit, delimitate]