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Related to Mercalli scale: Moment magnitude scale
Mer·cal·li scale(mər-kä′lē, mĕr-)
A scale of earthquake intensity based on observed effects and ranging from I (detectable only with instruments) to XII (causing almost total destruction).
[After Giuseppi Mercalli (1850-1914), Italian seismologist.]
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
[C20: named after Giuseppe Mercalli (1850–1914), Italian volcanologist and seismologist]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
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|Noun||1.||Mercalli scale - a scale formerly used to describe the magnitude of an earthquake; an earthquake detected only by seismographs is a I and an earthquake that destroys all buildings is a XII|
geology - a science that deals with the history of the earth as recorded in rocks
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