1. (verb)demagnetize, demagnetise erase (a magnetic storage device) Synonyms: degauss, demagnetise, demagnetize Antonyms: magnetise, magnetize
2. (verb)demagnetize, demagnetise, degauss make nonmagnetic; take away the magnetic properties (of) Synonyms: degauss, demagnetise, demagnetize Antonyms: magnetise, magnetize