Congress of Industrial Organizations
- a federation of affiliated industrial labor unions, founded 1935 within the American Federation of Labor but independent of it 1938–55. Abbreviation: C.I.O., CIO
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Dictionary.com Unabridged
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Congress of Industrial Organizations
- (in the US) a federation of industrial unions formed in 1935. It united with the AFL in 1955 to form the AFL-CIOAbbreviation: CIO
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Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
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