To destroy a metal or alloy gradually, especially by oxidation or chemical action: acid corroding metal.
Distruggere gradualmente un metallo o una lega, soprattutto per ossidazione o azione chimica: metallo che corrode l'acido.
To impair steadily; deteriorate: "Doubt and mistrust could creep into our lives, corroding personal and professional relationships” ( Philip Taubman).