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English definition of “ex officio”

ex officio

adjective (also ex-officio)
/ˌeksəˈfɪʃiəʊ/ US   /-oʊ/ formal
because of a person's position in a formal group: The president of the board is an ex officio member of the committee.
ex officio adverb
(Definition of ex officio from the Cambridge Business English Dictionary © Cambridge University Press)
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