[UK and ANZ] usually -ise [verb] [T] [specialized] - to cover (a metal) with a layer of oxide (= a chemical combination of oxygen and one other element) by using an electric currentThe steel girders were anodized to protect them from corrosion.
ANODIZE
Meaning of ANODIZE in English
Cambridge English vocab. Кембриджский английский словарь. 2012