sacrificial anode

I know this is the word used in English but “Holocaust” has a sacrificial overtone that is unbearable to me.
Claude Lanzmann on 'Shoah', His Memoir, and the Banality of Evil|Clémence Boulouque|June 11, 2012|DAILY BEAST
That still exists, but the sacrificial style in American politics is just as strong.
Blood for Sale? Reagan’s Pagan Cult|Lee Siegel|May 26, 2012|DAILY BEAST
According to anthropologist René Girard, cultures require sacrificial victims in order to avoid epidemic revenge feuds.
GOP Primaries Provide a Feast for Our Schadenfreude Appetite|Eric G. Wilson|January 19, 2012|DAILY BEAST
She got to be the designated sacrificial lamb to run against Joe Biden in 2008, and got 35 percent of the vote.
The Right's Self-Inflicted Wound|Matthew Yglesias|September 14, 2010|DAILY BEAST

Colonel Sanders, image forever accompanied odor of sacrificial meat.
The Prince of Gibberish|Allen Barra|June 6, 2009|DAILY BEAST
Kettlewell used to dilate on the great sacrificial feast of charity.
The English Church in the Eighteenth Century|Charles J. Abbey and John H. Overton
This presents a nobler view of the whole sacrificial system than the common one.
Beacon Lights of History, Volume I|John Lord
Professor Fortescue was unqualified in his condemnation of the sentiment which erected sacrificial altars in the family circle.
The Daughters of Danaus|Mona Caird
Among the antediluvians, sheep were immolated for sacrificial offerings, and their fleeces probably furnished them with clothing.
Domestic Animals|Richard L. Allen
On the anode side, purple permanganate ions are seen rising toward the positive electrode.
The Elements of Qualitative Chemical Analysis, vol. 1, parts 1 and 2.|Julius Stieglitz

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

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