GNU Collaborative International Dictionary of English

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Found 2 definitions

1.       
   Solder , n. [Formerly soder; F. soudure, OF. soudeure, fr. OF. & F. souder to solder, L. solidare to fasten, to make solid. See Solid, and cf. Sawder.] A metal or metallic alloy used when melted for uniting adjacent metallic edges or surfaces; a metallic cement. Hence, anything which unites or cements.
   1913 Webster
   Hard solder, a solder which fuses only at a red heat, as one composed of zinc and copper, or silver and copper, etc. -- Soft solder, a solder fusible at comparatively low temperatures; as, plumbers' solder, consisting of two parts lead and one part tin, is a soft solder.
   1913 Webster
   
         
       

2.       
   Solder, v. t. [imp. & p. p. Soldered ; p. pr. & vb. n. Soldering.] [Formerlysoder. See Solder, n.]
   To unite (metallic surfaces or edges) by the intervention of a more fusible metal or metallic alloy applied when melted; to join by means of metallic cement.
   1913 Webster
   To mend; to patch up. “To solder up a broken cause.”  
   Hooker.
   
   1913 Webster