interagency
adj. C1 Advanced US //ˌɪntɝˈeɪdʒənsi// in·ter·a·gen·cy
adj. involving two or more different government departments or organizations working together. You use this to describe a project or plan that requires help from several different groups.
adj. involving or relating to two or more agencies, especially within a government or large organization. Typically used to describe collaborative efforts or shared responsibilities.
The police and fire departments held an interagency meeting.
The new environmental policy requires an interagency task force to coordinate efforts between the health and energy departments.
Effective disaster response often depends on seamless interagency communication, as no single department possesses the full range of resources required to manage a large-scale crisis.