From Longman Dictionary of Contemporary Englishinterdependencein‧ter‧de‧pen‧dence /ˌɪntədɪˈpendəns $ -tər-/ (also interdependency /-dənsi/) noun [countable usually singular, uncountable]DEPEND ON/RELY ONa situation in which people or things depend on each otherinterdependence ofthe interdependence of our body’s immune and nervous systems