(Latin) literally "from the office"; when a person gains a new job, (s)he may at the same time gain a place on certain committees that go along with that new job; hence, (s)he holds the committee office ex officio not because of personally being appointed.
By virtue of his office A magistrate sitting with a judge at the Crown Court would appear ex officio in a case where no judicial function is to be exercised by the magistrate eg case committed to Crown Court for sentence only
Powers resulting from holding a particular office but not specifically conferred to an individual. For example, by virtue of office the county clerk serves as ex officio clerk to the county board of equalization.
Latin phrase meaning "by virtue of office." In both the House and Senate, the chairman and ranking member of committees are considered to be "ex officio" members of all the committee"s subcommittees, giving them the right to participate in subcommittee meetings if they wish.
(literally: out of or because of one's office) The act of holding one office by reason of holding another. For example, the Lieutenant Governor is, ex officio, a member of the University of California Board of Regents.
The holding of an office or assumption of a duty by virtue of holding a particular office, as when the majority floor leader is by virtue of that office an ex-officio member of the Legislative Research Commission.
Literally, by virtue of one's office. The term refers to the practice under Senate rules that allows the chairman and ranking minority member of a committee to participate in any of the subcommittees of that committee, but generally not to vote.