/ Dictionary / Index M message switching: Meaning and Definition of Find definitions for: mes'sage switch"ing Pronunciation: [key] the process by which data transmissions are stored until a proper circuit is available so that they can be forwarded. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. message center message unit Related Content Daily Word Quiz: impetuous Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language