solder on Wikipedia
Soldered joint between two substantial metal strips
Soldering small components of an electronic circuit board
A spool of solder wire. The so-called wire actually is a hollow tube filled with a core of flux that melts when the soldering iron is applied.


From Middle English souder, soudere, soudur (noun), from Old French soldure, soudeure (noun), from Old French souder, solder (to solder, verb) (> Middle English souden (to solder)), from Latin solidāre, present active infinitive of solidō (make solid).


LanguageHat discussion of the many pronunciations of “solder”


solder (countable and uncountable, plural solders)

  1. Any of various easily-melted alloys, commonly of tin and lead, that are used to mend, coat, or join metal objects, usually small.
  2. Figuratively, circumstances or emotions that strongly bond things or persons together in analogy to solder that joins metals.
    • 1860, D R. M'Nab, Christian consolation; The way home; and Conjugal love:
      Friendship! Mysterious cement of the soul — and solder of society.



solder (third-person singular simple present solders, present participle soldering, simple past and past participle soldered)

  1. to join items together, or to coat them with solder
  2. (figuratively) to join things as if with solder.
    • 2013, Elizabeth Burton-Phillips, Mum, Can You Lend Me Twenty Quid?: What drugs did to my family, Little, Brown Book Group, →ISBN:
      In the days that followed Nick's death I was in severe shock. I was shattered both physically and emotionally... I seemed to be living in slow motion, waiting for the fragmented parts of my body and mind to solder themselves together.


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Cf. solde.



  1. to close (a deal)
  2. (finance) to settle, to pay off (debt)
  3. to sell at sales, to have a sale
  4. (reflexive, ~ par) to end up (in), to result (in)


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