/ Dictionary / Index M massive retaliation: Meaning and Definition of Find definitions for: mas'sive retalia'tion Pronunciation: [key] a strategy of military counterattack that involves the use of nuclear weapons. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. massive massless Related Content Daily Word Quiz: vertigo Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language