"tinning" in the noun sense
the application of a thin layer of soft solder to the ends of wires before soldering them
"careful tinning of the ends of wires results in a better joint when you solder them"
2. tinning, tin-plating
the application of a protective layer of tin
"tinning" in the verb sense
plate with tin
2. can, tin, put up
preserve in a can or tin
"tinned foods are not very tasty"
prepare (a metal) for soldering or brazing by applying a thin layer of solder to the surface
Source: WordNet® (An amazing lexical database of English)
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