solder

1 of 2

noun

sol·​der ˈsä-dər 

ˈsȯ-

British also ˈsäl-də, 

ˈsōl-

1

: a metal or metallic alloy used when melted to join metallic surfaces

especially : an alloy of lead and tin so used

2

: something that unites

solder

2 of 2

verb

soldered; soldering ˈsä-d(ə-)riŋ 

ˈsȯ-

British also ˈsäl-, 

ˈsōl-

transitive verb

1

: to unite or make whole by solder

2

: to bring into or restore to firm union

a friendship soldered by common interests

intransitive verb

1

: to use solder

2

: to become united or repaired by or as if by solder

solderability

ˌsä-də-rə-ˈbi-lə-tē 

ˌsȯ-

noun

solderer

ˈsä-dər-ər 

ˈsȯ-

noun

Examples of solder in a Sentence

Verb

Wires are soldered onto the circuit board.

Recent Examples on the Web

Noun

The dies connect to each other and to the base die through microscopic bumps of solder that link to the TSVs. — IEEE Spectrum, 8 July 2026

Assuming the battery is fine (and all the other electrical components and solder have survived the long journey through time), how will the iPhone be activated? — Ewan Spence, Forbes.com, 6 July 2026

Verb

To optimize that, memory must be soldered extremely close to the CPU to reduce the length of the motherboard's traces (circuit lines). — John Burek, PC Magazine, 5 July 2026

Bezel setting is central to my work, as nearly every piece is built around handmade bezels which, in 22-karat gold, can be fused rather than soldered and then shaped and set entirely by hand using simple tools due to the metal’s purity and softness. — Thomas Waller, Footwear News, 27 May 2026

Word History

Etymology

Noun

Middle English soudure, from Anglo-French, from souder to solder, from Latin solidare to make solid, from solidus solid

First Known Use

Noun

14th century, in the meaning defined at sense 1

Verb

15th century, in the meaning defined at transitive sense 1

Rhymes for solder

• broader
• dodder
• fodder
• odder
• marauder

Kids Definition

solder

1 of 2 noun

sol·​der ˈsäd-ər 

ˈsȯd-

: a metal or a mixture of metals (as of lead and tin) used when melted to join metallic surfaces

solder

2 of 2 verb

soldered; soldering -(ə-)riŋ 

1

: to unite or repair with solder

2

: to become joined or renewed by or as if by the use of solder

solderer

-ər-ər 

noun