Definition of CIO in English:

CIO

Line breaks: CIO

abbreviation

historical
  • (In North America) Congress of Industrial Organizations.

More definitions of CIO

Definition of CIO in:

Get more from Oxford Dictionaries

Subscribe to remove adverts and access premium resources

Word of the day astrogation
Pronunciation: ˌastrə(ʊ)ˈgeɪʃ(ə)n
noun
(in science fiction) navigation in outer space