symbiotic
adjective
sym·bi·ot·ic ˌsim-bē-ˈä-tik 
: relating to or marked by symbiosis:
a
: characterized by, living in, or being a close physical association (as in mutualism or commensalism) between two or more dissimilar organisms
The truffle is a … fungus that forms a symbiotic relationship with its host tree.
Robb Walsh
Robb WalshTermites harbor diverse symbiotic gut microorganisms, the majority of which are as yet uncultivable and their interrelationships unclear. Yuichi Hongoh et al.
Yuichi Hongoh et al. b
: characterized by or being a close, cooperative, or interdependent relationship
Today, art advisers are as diverse as the clients they help. They often work alone and form intimate, symbiotic relationships with the people they serve. Deborah Gimelson
Deborah GimelsonSigal's study … illustrates how reporters' constant need for news and how government officials' need for publicity and favorable coverage for their agencies combine into a symbiotic relationship between Washington reporters and officials. Charles R. Wright
Charles R. Wright symbiotically
ˌsim-bē-ˈä-ti-k(ə-)lē
adverb Some species of clams … live symbiotically with sulfur-loving bacteria: the bacteria, which live on the clams' gills, get sulfide from the clams, and the clams, in turn, feed on the bacteria. Natural History
Natural History The irony is that the Pentagon and the Soviet Defense Ministry prosper symbiotically. Arthur M. Schlesinger, Jr.
Arthur M. Schlesinger, Jr. 
Word History
Etymology
symbi(osis) + -otic entry 1, probably after German symbiotisch
First Known Use
1875, in the meaning defined above
Medical Definition
symbiotic
adjective
sym·bi·ot·ic ˌsim-ˌbī-ˈät-ik -bē-
-bē- variants also symbiotical
-i-kəl
: relating to, characterized by, living in, or resulting from a state of symbiosis
symbiotic
adjective
as in mutual
characterized by a cooperative or interdependent relationship The neighbors have a symbiotic relationship, each helping the other out as they are able. Synonyms & Similar Words
Relevance
- mutual
- cooperative
- reciprocal
- cooperating
- complementary
- synergistic
- correlative
- communal
- shared
- synergetic
- collaborating
- bilateral
- synergic
- collective
- joint
- supplemental
- common
- supplementary
- mutualistic
- consensual
- united
- commensal
- combined
- dependent
- two-way
- conjoint
- associational
- consociational
- subsocial
Antonyms & Near Antonyms
- nonreciprocal
- noncomplementary
- nonsocial
- solitary
- individual
- autonomous
- independent
- semiautonomous
- reclusive
- self-sustaining
- unsociable
- altricial
- semi-independent
- lone
- self-subsistent
- self-sufficient
- recluse
- self-supporting
- self-contained