Ex Officio
A Dictionary of Law · Henry Campbell Black · 1891
A Dictionary of Law
From office; by virtue of the office; without any other warrant or appointment than that resulting from the holding of a particular office. Powers may be exercised by an officer which are not specifically conferred upon him, but are necessarily implied in his office; these are ex officio. Thus, a judge has ex officio the powers of a conservator of the peace. Courts are bound to notice public statutes judicially and ex officio. EX OFFICIO INFORMATION.
In English law
A criminal information filed by the attorney general ex officio on behalf of the crown, in the court of queen's bench, for offenses more immediately affecting the government.
Mozley & Whitley; 4 Steph. Comm. 372-378.