The Collaborative International Dictionary of English v.0.48:

Teleological \Te`le*o*log"ic*al\, a. [Cf. F.
   t['e]l['e]ologique.]
   1. (Biol.) Of or pertaining to teleology, or the doctrine of
      design.
      [1913 Webster]

   2. showing evidence of design or purpose, especially in
      natural phenomena.
      [PJC] -- Te`le*o*log"ic*al*ly, adv.
      [1913 Webster]

WordNet (r) 3.0 (2006):

teleological
    adj 1: of or relating to teleology