galvanic anode

== English == === Noun === galvanic anode (plural galvanic anodes) An anode used to protect buried or submerged metal structures from corrosion, made from a metal alloy with a more "active" voltage (more negative electrochemical potential) than the metal of the protected structure, so that the anode material corrodes and is consumed in preference to the structure. ==== Synonyms ==== sacrificial anode