mutualism

mu·tu·al·ism

noun
\ˈmyüch-(ə-)wə-ˌliz-əm, ˈmyü-chə-ˌliz-\

Definition of MUTUALISM

: mutually beneficial association between different kinds of organisms

—mu·tu·al·ist \-ləst\ noun

—mu·tu·al·is·tic \ˌmyüch-(ə-)wə-ˈlis-tik, ˌmyü-chə-ˈlis-\ adjective