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ex officio

[eks uh-fish-ee-oh] /ˈɛks əˈfɪʃ iˌoʊ/
adverb, adjective
by virtue of office or official position.
Origin of ex officio
Borrowed into English from Latin around 1525-35 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2017.
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British Dictionary definitions for ex officio

ex officio

/ˈɛks əˈfɪʃɪəʊ; əˈfɪsɪəʊ/
adverb, adjective
by right of position or office ex off
Word Origin
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word Origin and History for ex officio

Latin, "in discharge of one's duties," literally "out of duty," from ex "out of" (see ex-) + officio, ablative of officium "duty" (see office).

Online Etymology Dictionary, © 2010 Douglas Harper
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