Definition of solder noun from the Oxford Advanced Learner's Dictionary

 

solder

 noun
noun
BrE BrE//ˈsəʊldə(r)//
 
, BrE//ˈsɒldə(r)//
 
; NAmE NAmE//ˈsɑːdər//
 
 
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[uncountable] a mixture of metals that is heated and melted and then used to join metals, wires, etc. together Word Origin Middle English: from Old French soudure, from the verb souder, from Latin solidare ‘fasten together’, from solidus ‘solid’.
See the Oxford Advanced American Dictionary entry: solder

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