/ Dictionary / Index M microearthquake: Meaning and Definition of Find definitions for: mi•cro•earth•quake Pronunciation: (mī"krō-ûrth'kwāk"), [key] — n. an earthquake of very low intensity (magnitude of 2 or less on the Richter scale). Also called Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. microdot microecology Related Content Daily Word Quiz: fervor Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language