|1.||of or relating to an office, its administration, or its duration|
|2.||sanctioned by, recognized by, or derived from authority: an official statement|
|3.||appointed by authority, esp for some special duty|
|4.||having a formal ceremonial character: an official dinner|
|5.||a person who holds a position in an organization, government department, etc, esp a subordinate position|
|1.||of or relating to one of the two factions of the IRA and Sinn Féin, created by a split in 1969. The Official movement subsequently renounced terrorism and entered constitutional politics in the Irish Republic as the Workers' Party (now the Democratic Left)|
|2.||a member of the Official IRA and Sinn Féin|
official of·fi·cial (ə-fĭsh'əl)
Authorized by or contained in the U.S. Pharmacopoeia or National Formulary. Used of drugs.
unofficial un·of·fi·cial (ŭn'ə-fĭsh'əl)
Of or being a drug that is not listed in the United States Pharmacopeia or the National Formulary.