zinc

zinc
noun

[mass noun]the chemical element of atomic number 30, a silvery-white metal which is a constituent of brass and is used for coating (galvanizing) iron and steel to protect against corrosion(Symbol: Zn)
(化)锌(化学符号：Zn)
■[usu. as modifier]galvanized iron or steel, especially as the material of domestic utensils or corrugated roofs
（用作家庭器皿或屋顶等的）锌板，锌条
a zinc roof.
锌板屋顶。
Zinc only began to be well known as a metal in the early 18th century, although brass, an alloy of zinc and copper, had been known since ancient times. The chief zinc ore is sphalerite. The metal is used as a component in various alloys, as well as for coating (galvanizing) iron and steel to protect against corrosion

verb

[with obj.][usu. as adj.](zinced ˈzɪŋ(k)t)coat (iron) with zinc or a zinc compound to prevent rust
（为防锈而）镀锌于（铁）

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