D defs.my
Entry 1 sense Webster, 1913

Ex officio

/ĕks əf-ĭs'-ē-ō/ · Ex· of·fi·ci·o · IPA /ˌɛks əˈfɪʃioʊ/
01 From office; by virtue, or as a consequence, of an office; officially.
pl. Ex officiis ((#))
  1. 1.
    From office; by virtue, or as a consequence, of an office; officially.