Sol"der (?), 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.
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.
© Webster 1913.
Sol"der, v. t. [imp. & p. p. Soldered (?); p. pr. & vb. n. Soldering.] [Formerlysoder. See Solder, n.]
1.
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.
2.
To mend; to patch up.
"To
solder up a broken cause."
Hooker.
© Webster 1913.