Official Of*fi"cial, a. [L. officialis: cf. F. officiel. See Office, and cf. Official, n.] 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. (Pharm.) Approved by authority; sanctioned by the pharmacop[oe]ia; appointed to be used in medicine; as, an official drug or preparation. Cf. Officinal. 4. Discharging an office or function. [Obs.] The stomach and other parts official unto nutrition. --Sir T. Browne.