1. Of or pertaining to an office or public trust; as, official duties, or routine. That, in the official marks invested, you Anon do meet the senate. (Shak)
2. Derived from the proper office or officer, or from the proper authority; made or communicated by virtue of authority; as, an official statement or report.
3. (Science: pharmacology) Approved by authority; sanctioned by the pharmacopoeia; appointed to be used in medicine; as, an official drug or preparation. Cf. Officinal.
4. Discharging an office or function. The stomach and other parts official unto nutrition. (Sir T. Browne)
Origin: L. Officialis: cf. F. Officiel. See Office, and cf. Official.