From office; by virtue of the office; without any other warrant or appointment than that resulting from the holding of a particular office. Powers way 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 ea officio the powers of a conservator of the peace. Courts are bound to notice public statutes judicially and ea officio. l a —Ex officio information. In English law. A criminal information filed by the attorney general ez officio on behalf of the crown, in the court of king's bench, for offenses more immediately affecting the government, and to be distinguisbed from informations in which the crown is the nominal prosecutor. Mozley &