Definition of "earthshaking" [earthshaking]

• Of great consequence or importance. (adjective)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "Asked to do an exhibition at the Museum of the City of New York in 2003, based on my book Harlem, Lost and Found: An Architectural and Social History, 1765-1985, recalling the excitement surrounding "Harlem on My Mind," I knew exactly the kind of earthshaking-attendance record-breaking show I hoped to produce."
• "The transition to such cramped quarters was "earthshaking" at first, she said."
• "While the changes are not "earthshaking," they will ultimately strengthen the church's efforts to identify and discipline priests who abuse minors, the sources said."