demagnetize
Concise Oxford English Dictionary © 2008 Oxford University Press:
demagnetize /diːˈmaɡnɪtʌɪz/ (or demagnetise)
▶verb remove magnetic properties from.
– derivatives
demagnetization noun,
demagnetizer noun.
demagnetization noun,
demagnetizer noun.
'demagnetize' also found in these Oxford entries:

