/ Dictionary / Index M mass meeting: Meaning and Definition of Find definitions for: mass' meet'ing Pronunciation: [key] a large or general assembly to discuss or hear discussed some matter of common interest or concern: a mass meeting to protest the proliferation of nuclear weapons. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. mass medium mass merchandiser Related Content Daily Word Quiz: languid Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language