Official meaning : An office holder invested with powers and authorities. A person responsible for applying the rules of a game or sport in a competition. Of or pertaining to an office or public trust. Derived from the proper office or officer, or from the proper authority; made or communicated by virtue of authority Approved by authority; authorized. (pharmaceutical) Sanctioned by the pharmacopoeia; appointed to be used in medicine; officinal. Discharging an office or function. Relating to an office; especially, to a subordinate executive officer or attendant. Relating to an ecclesiastical judge appointed by a bishop, chapter, archdeacon, etc., with charge of the spiritual jurisdiction. True, real, beyond doubt. Listen in a national pharmacopeia.