ecological

from WordNet (r) 3.0 (2006)

ecological
    adj 1: characterized by the interdependence of living organisms
           in an environment; "an ecological disaster" [syn:
           {ecological}, {ecologic}]
    2: of or relating to the science of ecology; "ecological
       research" [syn: {ecological}, {ecologic}, {bionomical},
       {bionomic}]

from The Collaborative International Dictionary of English v.0.48

ecological \ecological\ ([-e]*k[-o]"l[o^]j"[i^]*kal), adj.
   of or pertaining to ecology; as, an ecological disaster.

   Syn: bionomic, bionomical.
        [WordNet 1.5]