Congress of Industrial Organizations: Meaning and Definition of

Con'gress of Indus'trial Organiza'tions

Pronunciation: [key]
  1. a federation of affiliated industrial labor unions, founded 1935 within the American Federation of Labor but independent of it 1938–55. Abbr.: C.I.O., CIO
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.