magnetostriction

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mag·ne·to·stric·tion

 (măg-nē′tō-strĭk′shən)
n.
Deformation of a material, especially a ferromagnetic material, exposed to a magnetic field. Rapidly alternating magnetostriction causes the iron cores of transformers to hum or buzz.


mag·ne′to·stric′tive adj.
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.

magnetostriction

(mæɡˌniːtəʊˈstrɪkʃən)
n
(General Physics) a change in dimensions of a ferromagnetic material that is subjected to a magnetic field
[C19: from magneto- + constriction]
magˌnetoˈstrictive adj
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014

mag•ne•to•stric•tion

(mægˌni toʊˈstrɪk ʃən)

n.
a change in dimensions exhibited by ferromagnetic materials when subjected to a magnetic field.
[1895–1900]
mag•ne`to•stric′tive (-təˈstrɪk tɪv) adj.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.