sacrificial anode
noun
Chemistry.
an anode that is attached to a metal object subject to electrolysis and is decomposed instead of the object.
Origin of sacrificial anode
First recorded in 1975–80
Words nearby sacrificial anode
sacred writ,
sacrifice,
sacrifice fly,
sacrifice paddock,
sacrificial,
sacrificial anode,
sacrilege,
sacrilegious,
sacring,
sacring bell,
sacristan
British Dictionary definitions for sacrificial anode
sacrificial anode
noun
metallurgy
an electropositive metal, such as zinc, that protects a more important electronegative part by corroding when attacked by electrolytic action