IPA: /ˌɪntəˈdɛpənd/
KK: /ˌɪntərdɪˈpɛnd/
When two or more people or things rely on each other for support or function.
In a healthy ecosystem, all species interdepend on one another to survive.
Past: interdependent
Past Participle: interdependent
Interdepend is formed from "inter-" (meaning between) and "dependere" (meaning to hang down or rely). The word describes a relationship where entities rely on each other, existing in a state of mutual dependence between them.
Think of things that rely on each other 'between' ('inter-') and 'hang down' ('dependere') — that's what interdepend means.
No commonly confused words.