EIDR abbreviation Definition of EIDR Entertainment Identifier Registry en·ter·tain·ment | \ ˌen-tər-ˈtān-mənt iden·ti·fi·er | \ ī-ˈden-tə-ˌfī(-ə)r reg·is·try | \ ˈre-jə-strē 1. The standard identifier for media and entertainment assets used by supply chain participants for identification of assets and their specific manifestations 2. The organization known as EIDR, which is responsible for identifying, knowing and saying what a media and entertainment asset is 3. The official registry of media and entertainment assets 4. The unique and persistent identifier of media and entertainment assets 5. The EIDR ID identifies the registrant in addition to the work and manifestation First known use of EIDR 2010 by the Media and Entertainment Industry