- a magnet that retains its magnetism after being removed from an external magnetic field.
Origin of permanent magnet
First recorded in 1820–30
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
- a magnet, often of steel, that retains its magnetization after the magnetic field producing it has been removed
- 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.