Definitions

from The American Heritage® Dictionary of the English Language, 5th Edition.

  • transitive verb To remove magnetic properties from.
  • transitive verb To erase (a magnetic storage device).

from The Century Dictionary.

  • To deprive of magnetic polarity.
  • To demesmerize; restore from a mesmerized state to normal consciousness.
  • Also spelled demagnetise.

from the GNU version of the Collaborative International Dictionary of English.

  • transitive verb To deprive of magnetic properties; to render nonmagnetic. See magnetize.
  • transitive verb archaic To free from mesmeric influence; to demesmerize.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • verb To make something nonmagnetic by removing its magnetic properties.
  • verb To erase the contents of a magnetic storage device.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • verb erase (a magnetic storage device)
  • verb make nonmagnetic; take away the magnetic properties (of)

Etymologies

from Wiktionary, Creative Commons Attribution/Share-Alike License

From de- +‎ magnetize

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Examples

  • In response to a question from Clinton, Gray argued that the best way to "demagnetize" the situation was to find third countries willing to provide "safe haven" for the boat people until Aristide could be restored.

    How Did We Get Here? 2008

  • Still, the administration is trying to "demagnetize" America and persuade potential refugees to stay at home.

    How Do We Get To The Endgame? 2008

  • The new systems cut down on one of the big annoyances of typical key cards that use magnetic strips: the cards sometimes demagnetize and stop working.

    Hotels Encourage Guests to Throw Away Their Keys Andrea Petersen 2011

  • The new systems cut down on one of the big annoyances of typical key cards that use magnetic strips: the cards sometimes demagnetize and stop working.

    Hotels Encourage Guests to Throw Away Their Keys Andrea Petersen 2011

  • They didn't even bother to ask for her receipt anymore when the librarians didn't demagnetize a book quite right and it set off the detectors on her way out, “go ahead, have a nice day,” they would say simply and with a casual wave of their hand.

    The Carnegie Kait Em Bird 2011

  • I recently wrote a post called Science and the Urban Legend in which I debunked (among other things) the false belief that eel skin wallets demagnetize credit cards because of the residual electricity left over from the eels theyare made from.

    2008 March | ScienceJunkies.com 2008

  • The Legend - Eelskin wallets demagnetize credit cards due to leftover charges from the electric eels used to make them.

    Science and the Urban Legend 2008

  • I recently wrote a post called Science and the Urban Legend in which I debunked (among other things) the false belief that eel skin wallets demagnetize credit cards because of the residual electricity left over from the eels theyare made from.

    Just Shocking! 2008

  • They demagnetize my credit cards so I cannot carry the key in my handbag.

    The Poet Prince KATHLEEN MCGOWAN 2010

  • She twisted and pulled, trying to demagnetize them, but they held firm.

    Scott Westerfeld: Uglies Quartet Scott Westerfeld 2010

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