Definition of ex officio in English:

ex officio

adjective & adverb

  • By virtue of one's position or status.

    [as adjective] ‘an ex officio member of the committee’
    titular, nominal, in name only, in title only, unofficial, token, so-called
    View synonyms

Origin

Latin, from ex out of, from + officium duty.

Pronunciation:

ex officio

/ˌeks əˈfiSHēō/