sacrificial anode

noun

1. Chemistry. an anode that is attached to a metal object subject to electrolysis and is decomposed instead of the object.

sacrificial anode

noun

1. metallurgy an electropositive metal, such as zinc, that protects a more important electronegative part by corroding when attacked by electrolytic action

Word History and Origins

Origin of sacrificial anode¹

First recorded in 1975–80