Definition of symbiosis by the free online dictionary Definition of symbiosis by the free online dictionary Pl.The field of chemistry and Pandora Jewelry Australia biology a close, prolonged association between two or more different organisms distinct species that may, but does not likely, support each member. 2.A loving of mutual benefit or dependence. (Life sciences allied software application submissions / biology)A close and usually obligatory association of two organisms of various species that live together, often thus on their mutual benefit 2. (Sociology)A similar special connection between interdependent persons or groups[via new latina from greek:A living with these;Watch symbiont] Less itpa continuously, ing adj 2.Any interdependent or mutually beneficial romantic between two persons, associations, therefore forth. [1615 symb plan s.Of symbion to live with(Sym sym + bion to imagine)+ sis sis] Pandora Beads Symbi( Symbiadj. Symbi adv. Symbiosis(Smb dure)The close association between two or more organisms of various species, often but not always benefiting each member.The correlation of algae and fungi in lichens and of bacteria living in the intestines or on the skin of animals are forms of symbiosis.Some scientists believe that many multicellular organisms evolved from affairs between unicellular ones and that the dna containing organelles within certain eukaryotic cells(By way of example mitochondria and chloroplasts)Are the product of affairs in which the participants became interdependent., adj. Pandora Enamel Beads See plus:Organismsthe living together of two unlike organisms;The relationship is advisable to both(Mutualism coupled with symbiosis), Good one without effect on the other(Commensalism), Good one and detrimental to the other(Parasitism), Detrimental to the first without any effect on the other side(Amensalism), Or dangerous to both(Synnecrosis)., adj.