verb

demagnetize

dee-MAG-nuh-tyze/diːˈmæɡnətaɪz/

To remove or reduce the magnetic properties of something.

The coil demagnetizes the steel bar so it no longer attracts nails.

Two-stage view of a steel bar attracting iron nails then the same bar with nails no longer attracted, a small demagnetizing coil sits around it, no text.

Etymology

deEnglishundo or remove

+magnetEnglishmagnet

+izeEnglishmake or render

Magnet plus -ize forms the verb for giving something magnetic properties. Here de- reverses that action: demagnetizing deprives an object of its magnetic polarity.

In context

SuperMagnetMan Product Demos0:11

how does the magnet demagnetize and the second part was specifically how does the magnet potentially demagnetized in a motor application

FAQ: What can cause a magnet to demagnetize?

More examples

Strong heat can demagnetize a permanent magnet.
The watchmaker demagnetized my watch to help it keep accurate time.
This machine removes residual magnetism by demagnetizing the steel parts.

Forms

demagnetize · demagnetizes · demagnetized · demagnetizing

demagnetization noun — The removal or reduction of magnetic properties.

Similar words

degauss: Usually means removing unwanted magnetism with a changing magnetic field.