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1. The fusion of two blocks of ice by pressure.
2. Successive melting under pressure and freezing when pressure is relaxed at the interface of two blocks of ice.
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.
(General Physics) the rejoining together of two pieces of ice as a result of melting under pressure at the interface between them and subsequent refreezing
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
re•ge•la•tion(ˌri dʒəˈleɪ ʃən)
a phenomenon in which the freezing point of water is lowered by the application of pressure.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
The melting of ice when subjected to pressure and refreezing on removal of that pressure.
Dictionary of Unfamiliar Words by Diagram Group Copyright © 2008 by Diagram Visual Information Limited