a magnet that retains its magnetism after being removed from an external magnetic field.
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- permanent court of international justice,
- permanent dentition,
- permanent echo,
- permanent hardness,
- permanent health insurance,
- permanent mold,
- permanent press,
- permanent resident,
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- permanent tooth
Origin of permanent magnet
First recorded in 1820–30
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
a magnet, often of steel, that retains its magnetization after the magnetic field producing it has been removed
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
[ pûr′mə-nənt ]
A piece of ferromagnetic material that retains its magnetism after it has been magnetized.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.