[syn: ecological, ecologic, bionomical, bionomic]
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]
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]