1. ex officio - Adjective
2. ex officio - Adverb
4. ex officio - Adjective Satellite
From office; by virtue, or as a consequence, of an office; officially.
Source: Webster's dictionarythe president sat on the committee ex officio Source: Internet
the head of the department serves as an ex officio member of the board Source: Internet
Officers Traditionally the House of Lords did not elect its own speaker, unlike the House of Commons; rather, the ex officio presiding officer was the Lord Chancellor. Source: Internet
In 1976, the Letters Patent for the Order were amended to introduce the rank of Knight and Dame to the Order, and from that time the governor-general became, ex officio, the Chancellor and Principal Knight of the Order. Source: Internet
Election results in the subnational jurisdictions held great significance for the Yeltsin administration because the winners would fill the ex officio seats in the Federation Council, which until 1996 was a reliable bastion of support. Source: Internet
Executive Branch The Executive Council consists of the Governor, three ex officio officers (one, the Attorney General, having no vote), and five elected members of the Legislative Council. Source: Internet