plating

noun

A thin layer of metal, such as gold or silver, deposited on or applied to a surface.

A coating of metal sheets or plates.

The art or operation of covering articles with a thin coating or film of metal, especially of overlaying articles made of the baser metals with a thin coating of gold, silver, or nickel.

A thin coating of one metal laid upon another.

In bacterial., the pouring of liquefied gelatin or agar-agar containing a mixed culture of bacteria upon a glass plate or into a Petri dish, where the medium hardens and thus permits the isolation of specific organisms. Also plating-out.