The Collaborative International Dictionary of English v.0.48:
Symbiotic \Sym`bi*ot"ic\ ([i^]m`b[i^]*[o^]t"[i^]k), a. [Gr. symbiwtiko`s.] (Biol.) Pertaining to, or characterized by, or living in, a state of symbiosis. -- Sym`bi*ot"ic*al, a. -- Sym`bi*ot"ic*al*ly, adv. [Webster 1913 Suppl.]WordNet (r) 3.0 (2006):
symbiotically adv 1: in a symbiotic manner