'Mutualism' definitions:

Definition of 'mutualism'

From: WordNet
noun
The relation between two different species of organisms that are interdependent; each gains benefits from the other [syn: symbiosis, mutualism]

Definition of 'Mutualism'

From: GCIDE
  • Mutualism \Mu"tu*al*ism\, n. (Ethics) The doctrine of mutual dependence as the condition of individual and social welfare. --F. Harrison. --H. Spencer. --Mallock. [1913 Webster]