Mercalli scale: Meaning and Definition of

Mer•cal'li scale'

Pronunciation: (mur-kä'lē, mer-It.mer-käl'lē), [key]
— Geol. Geol.
  1. 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.