/ Dictionary / Index M moonquake: Meaning and Definition of Find definitions for: moon•quake Pronunciation: (mn'kwāk"), [key] — n. a seismic vibration of the moon's surface. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. moonprobe moonraker Related Content Daily Word Quiz: resilient Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language