/ Dictionary / Index I industrial union: Meaning and Definition of Find definitions for: indus'trial un'ion Pronunciation: [key] a labor union composed of workers in various trades and crafts within one industry. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. industrial-strength Industrial Workers of the World Related Content Daily Word Quiz: secular Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language