acierage

noun

ac·​i·​er·​age

ˈa-sē-ə-rij

plural -s

: the process of coating the surface of a metal plate (as a stereotype plate) with a thin layer of iron by electrolysis, the iron becoming hard like steel : steeling

Word History

Etymology

French aciérage, from acier + -age

First Known Use

1852, in the meaning defined above

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