A four-character idiom meaning an organization that is partly governmental and partly private; semi-official or semi-governmental in nature.
この研究機関は半官半民の組織として設立された。
This research institute was established as a semi-governmental organization.
半官半民の団体は政府と民間の橋渡しをする役割を担う。
Semi-governmental organizations serve as a bridge between the government and the private sector.