Definitions of symbiotic on the Web:

• used of organisms (especially of different species) living together but not necessarily in a relation beneficial to each
  wordnetweb.princeton.edu/perl/webwn

• The term symbiosis (from the Greek: σύν syn "with"; and βίωσις biosis "living") commonly describes close and often long-term interactions ...
  en.wikipedia.org/wiki/Symbiotic

• Of, or relating to symbiosis; living together; Of a relationship with mutual benefit between two individuals or organisms
  en.wiktionary.org/wiki/symbiotic

• symbiosis - the relation between two different species of organisms that are interdependent; each gains benefits from the other
  wordnetweb.princeton.edu/perl/webwn

• symbiotically - in a symbiotic manner
  wordnetweb.princeton.edu/perl/webwn

• Symbiosis was a 70mm film shown in the Harvest Theater at The Land pavilion at Epcot at the Walt Disney World Resort in Lake Buena Vista, Florida. It was directed by Paul Gerber.
  en.wikipedia.org/wiki/Symbiosis_(film)

• Symbiosis is a musical ensemble specializing in creating relaxing, ambient music. The group was formed in 1987 and consists of flautist, John ...
  en.wikipedia.org/wiki/Symbiosis_(musical_ensemble)

• Symbiotica - is an artistic laboratory dedicated to the research, learning and critique of life sciences. Located within the at , it is the first research ...
  en.wikipedia.org/wiki/Symbiotica

• a relationship in which two or more dissimilar organisms live together in close association.
  www.hcs.ohio-state.edu/mg/manual/glossary.htm

• The intimate living together of two dissimilar organisms, frequently (but not always) in a mutually beneficial relationship.
  www.animalinfo.org/glosss.htm

• the living together of two dissimilar organisms, as in mutualism, commensalism, amensalism, or parasitism
  www.tafi.org.au/zooplankton/about/glossary.html

• symbiosis - the living together of unlike organisms in a close, long-lasting association.
  www.anbg.gov.au/glossary/webpubl/lichglos.htm

• symbiosis - (Gr. syn, with + bios, life) The close association of two different kinds of living organisms where there is benefit to both or where both receive an advantage from the association. An example is the association of the mycelium of mycorrhizal fungi with roots of seed plants. ...
  biotech.fyicenter.com/glossary/Biotechnology_Glossary_19.html

• symbiosis - An interactive association between two or more species living together; may be parasitic, commensal, or mutualistic. The relationship between two organisms.
  www.emc.maricopa.edu/faculty/farabee/BIOBK/BioBookglossS.html

• symbiosis - where organisms live together to their mutual benefit.
  www.marinebiodiversity.ca/BayOfFundy/glossQ-T.html