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1. The process of curving or the condition of being curved.
2. The use of arches or vaults in building.
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.
1. (Architecture) the use of arches or vaults in buildings
2. (Architecture) an arrangement of arches
[C17: from Late Latin arcuātiō arch, from Latin arcuāre to curve]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014