• synonyms


adjective Physics.
  1. noting or pertaining to a substance, as iron, that below a certain temperature, the Curie point, can possess magnetization in the absence of an external magnetic field; noting or pertaining to a substance in which the magnetic moments of the atoms are aligned.
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Origin of ferromagnetic

First recorded in 1840–50; ferro- + magnetic
Related formsfer·ro·mag·ne·tism [fer-oh-mag-ni-tiz-uh m] /ˌfɛr oʊˈmæg nɪˌtɪz əm/, noun
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for ferromagnetic

Historical Examples of ferromagnetic

  • It is well known that the form of a piece of ferromagnetic metal is in general slightly changed by magnetization.

    Encyclopaedia Britannica, 11th Edition, Volume 17, Slice 3


Word Origin and History for ferromagnetic


1840, from ferro- "iron" + magnetic.

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Online Etymology Dictionary, © 2010 Douglas Harper

ferromagnetic in Science


  1. The property of being strongly attracted to either pole of a magnet. Ferromagnetic materials, such as iron, contain unpaired electrons, each with a small magnetic field of its own, that align readily with each other in response to an external magnetic field. This alignment tends to persists even after the magnetic field is removed, a phenomenon called hysteresis. Ferromagnetism is important in the design of electromagnets, transformers, and many other electrical and mechanical devices, and in analyzing the history of the earth's magnetic reversals. Compare diamagnetism paramagnetism.
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Related formsferromagnetic adjective (fĕr′ō-măg-nĕtĭk)
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.