mutualism noun. ['mju:tʃʊǝlɪz(ǝ)m, -tjʊǝ-] M19.
[from MUTUAL + -ISM.]
1. The doctrine that individual and collective well-being is attainable only by mutual dependence; a system based on this, spec. one involving non-profit credit and voluntary association for the exchange of services. M19.

2. Biology. A condition of (obligate or facultative) symbiosis in which two organisms contribute mutually to the well-being of each other. L19.

[TahlilGaran] English Dictionary ▲