From office; by virtue of the ofiice; without any other warrant or appointment than that resulting from the holding of a particular ofiice. Powers may be exercised by an officer which are not spe-cifically conferred upon him, but are neces-sarily Implied in his ofiice; these are ex offieio. Thus, a judge has ex officio the pow-ers of a conservator of the peace. Courts are bound to notice public statutes judicially and ex officio
Source: Black’s Law Dictionary 2nd Ed (1910)
