demagnetize/diˈmægnətaɪz/Third PersondemagnetizesPresent ParticipledemagnetizingPast TensedemagnetizedPast Participledemagnetized1to cause something to lose all magnetic propertiesSynonyms: degaussAntonyms: magnetize2to clear the magnetic storage of magnetic tape, floppy disks, hard-disk drives, etc.