"charge or supply with magnetic properties," 1799, from magnet + -ize. Related: Magnetized; magnetizing. From 1785 in now-obsolete sense of "to mesmerize, hypnotize."
The strong magnet magnetized the iron shavings
She magnetized the audience with her tricks
magnet
magnetic
magnetism
magnetite
magnetization
magnetize
magneto
magneto-
magneto-electric
magnetopause
magnetosphere