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adj. Involving or representing different departments, as of a business, an academic institution, or a government: "the petty interdepartmental squabbling that surrounds the making of . . . foreign policy” ( Morton A. Reichek).

adj. Between departments; to do with the connection of departments.

adj. Involving multiple departments; multi-departmental.

ad. between departments

adj. between or among departments

interagency    38-page    interservice    interoffice    on-court