(1)Atechniquetoreducethecorrosionrateofametalbypolarizingitintoitspassiveregion,wheredissolutionratesarelow.
(2)Imposinganexternalelectricalpotentialtoprotectametalfromcorrosiveattack.(Applicableonlytometalsthatshowactive-passivebehavior.)Contrastwithcathodicprotection.