magnetostrictive

magnetostriction

[mag-nee-toh-strik-shuhn]
noun Physics.
a change in dimensions exhibited by ferromagnetic materials when subjected to a magnetic field.

Origin:
1895–1900; magneto- + (con)striction

magnetostrictive [mag-nee-tuh-strik-tiv] , adjective
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World English Dictionary
magnetostriction (mæɡˌniːtəʊˈstrɪkʃən)
 
n
a change in dimensions of a ferromagnetic material that is subjected to a magnetic field
 
[C19: from magneto- + constriction]
 
magneto'strictive
 
adj

Collins English Dictionary - Complete & Unabridged 10th Edition
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American Heritage
Science Dictionary
magnetostriction   (māg-nē'tō-rĭ-strĭk'shən)  Pronunciation Key 
The change in shape and density of a substance, especially a ferromagnetic substance, when exposed to a magnetic field. The change depends on the direction and strength of the magnetic field. Rapid, alternating magnetostriction causes the iron cores of household transformers, which are subject to a changing magnetic field, to hum or buzz.
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