Symbiosis

[,sɪmbɪ'əʊsɪs;-baɪ-] or [,sɪmbaɪ'osɪs]

Definition

(noun.) the relation between two different species of organisms that are interdependent; each gains benefits from the other.

Edited by Erna--From WordNet

Definition

n. a term introduced by De Bary to denote certain kinds of physiological partnership between organisms of different kinds—best restricted to such intimate and complementary partnerships as exist between algoid and fungoid elements in lichens or between unicellular Alg? and Radiolarians.—n. Sym′bion an organism living in such a state.—adj. Symbiot′ic.—adv. Symbiot′ically.

Typist: Moira