[1] : The Collaborative International Dictionary of English v.0.48

demagnetize \demag"netize\, v. t.
   1. to deprive of magnetic properties; to render nonmagnetic.
      see magnetize.
      1913 webster

            if the bar be rapidly magnetized and demagnetized.
                                                  --am. cyc.
      1913 webster

   2. to free from mesmeric influence; to demesmerize. archaic
      1913 webster +pjc -- demag`netiza"tion, n. --
      demag"neti`zer, n.
      1913 webster
see also:
magnetize demag`netiza"tion demag"neti`zer 

[2] : WordNet (r) 2.0

demagnetize
     v 1: erase a magnetic storage device syn: demagnetise
     2: make nonmagnetic; take away the magnetic properties of;
        "demagnetize the iron shavings"; "they degaussed the ship"
        syn: demagnetise, degauss ant: magnetize, magnetize
see also:
demagnetise degauss magnetize 

Demagnetize >> D Words
Demagnetize, definition of term: Demagnetize
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