Etymology

solder

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Today it means: Any of various easily melted alloys, commonly of tin and lead, that are used to mend, coat, or join metal objects, usually small. Full definition →

Middle English souder ← Old French soldure ← Latin solidāre
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The story

  1. Latin · derived fromsolidāre“make solid”
  2. Old French · derived fromsouder
  3. Old French · derived fromsoldure
  4. Middle English · inherited fromsouder
  5. English todaysolder

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 (“make solid”).

Etymology from Wiktionary, CC BY-SA 4.0.