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View more. The U.S. Office of Personnel Management (OPM), in cooperation with the Department of Health and Human Services, provides policy and guidance on Federal civilian employee health and assistance programs.
Organization of Petroleum-Exporting Countries, OPEC (noun) an organization of countries formed in 1961 to agree on a common policy for the production and sale of petroleum Freebase (0.00 / 0 votes) Rate this definition: