/ Dictionary / Index M Mercalli scale: Meaning and Definition of Find definitions for: Mer•cal'li scale' Pronunciation: (mur-kä'lē, mer-It.mer-käl'lē), [key] — Geol. Geol. a measure of earthquake intensity with 12 divisions ranging from I (felt by very few) to XII (total destruction). Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. mercado* mercantile Related Content Daily Word Quiz: secular Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language