'demagnetise' definitions:
Definition of 'demagnetise'
From: WordNet
verb
Erase (a magnetic storage device) [syn: demagnetize, demagnetise]
verb
Make nonmagnetic; take away the magnetic properties (of); "demagnetize the iron shavings"; "they degaussed the ship" [syn: demagnetize, demagnetise, degauss] [ant: magnetise, magnetize]