sol·​der | \ ˈsä-dər How to pronounce solder (audio) , ˈsȯ-, British also ˈsäl-də, ˈsōl-\

Definition of solder

 (Entry 1 of 2)

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


soldered; soldering\ ˈsä-​d(ə-​)riŋ How to pronounce soldering (audio) , ˈsȯ-​ , British also  ˈsäl-​ , ˈsōl-​ \

Definition of solder (Entry 2 of 2)

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

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Other Words from solder


solderability \ ˌsä-​də-​rə-​ˈbi-​lə-​tē How to pronounce solderability (audio) , ˌsȯ-​ \ noun
solderer \ ˈsä-​dər-​ər How to pronounce solderer (audio) , ˈsȯ-​ \ noun

Examples of solder in a Sentence


Wires are soldered onto the circuit board.

Recent Examples on the Web: Noun

So, the North Carolinian had a jeweler solder both of their wedding rings and create a necklace. Meghan Overdeep, Southern Living, "Single Dad Reunited with Late Wife’s Wedding Ring After Losing It on Vacation in Myrtle Beach," 1 Aug. 2019 In 1942, a few months after Japan’s attack on Pearl Harbor prompted Roosevelt to issue an executive order that led to the mass incarceration, U.S. solders armed with rifles pounded on the door of his family’s Los Angeles home. Teresa Watanabe, Los Angeles Times, "What is a concentration camp? It’s an old debate that mostly started in California," 26 July 2019 Officials told us it's basically the equal of a indium gallium solder on the new chip. Gordon Mah Ung, PCWorld, "AMD's new Ryzen 3000 APUs give budget gamers an affordable taste of Radeon Vega," 12 June 2019 Even with overhaul, lead can still infiltrate homes with old brass fixtures or lead solder on pipes. Dustin Renwick, National Geographic, "Five years on, the Flint water crisis is nowhere near over," 25 Apr. 2019 New York Gold beater’s block, repoussé hammer, solder pick, bezel pusher, burnishers, pliers, the torch and the kiln. Laura Jacobs, WSJ, "‘A View From the Jeweler’s Bench’ Review: A Glittering Education," 27 Feb. 2019 In the aftermath, Falcon 7Xs were grounded around the world until officials were able to trace the source of the problem: a bad solder joint that caused a control unit to transmit erroneous signals. Jeff Wise, Popular Mechanics, "4 Times Before the Boeing 737 Max 8 That Plane Automation Software Went Haywire," 18 Mar. 2019 This move will be popular among overclockers, as the better thermal conductivity of solder generally enables reduced temperatures and higher overclocking potential. Peter Bright, Ars Technica, "Intel goes up to 8 cores for mainstream chips, with a 28 core overclockable Xeon," 8 Oct. 2018 As soon as the flux disappears, touch the top of the joint with some solder. Steve Willson, Popular Mechanics, "How To Install An Electric Water Heater," 24 Aug. 2018

Recent Examples on the Web: Verb

In a break from the previous model, which used an M.2 drive that can in theory be replaced, Dell will pull an Apple and solder the SSD onto the motherboard. Gordon Mah Ung, PCWorld, "You can finally buy a 10th gen laptop: Dell's XPS 13 2-in-1 hits the shelves," 7 Aug. 2019 The team made a video that shows the heat applied by a soldering tip to a sample spreading and dissipating at 100 frames per second. Chris Lee, Ars Technica, "Painted-on salt provides glowing thermometer for tiny things," 17 July 2019 With all the switches soldered on, it’s time to assemble the case. Jon Porter, The Verge, "How and why I built my first mechanical keyboard," 21 June 2019 Without Parliament’s approval, Britain must either seek more time to solder together an agreement or plunge out of the EU immediately. Jason Douglas, WSJ, "Brexit Strikes a Bum Note for U.K. Artists as EU Gigs Dry Up," 17 June 2019 With the newest Mac mini, gone is the two-core, four-thread 28W Haswell processor with up to 16GB soldered RAM. Peter Bright, Ars Technica, "Mac mini review—a testament to Apple’s stubbornness," 23 Nov. 2018 For example, on a visit to the Titan crane, one will see the original anchor, weighing 2500kg, with a Nazi Swastika soldered into the iron handle, and a visit to the control room reveals that A/C was only just added within the last few years. Tom Fowlks, Popular Mechanics, "The Floating Crane That Went From Tending Nazi U-Boats To Fixing the Panama Canal," 1 Aug. 2018 The official said authorities had recovered soldering equipment, a printer, and stamps similar to those used on the package bombs after arresting Sayoc last week in Florida. Michael Balsamo, The Seattle Times, "Official: Pipe-bomb suspect had hit list of targets," 30 Oct. 2018 Inside the van, investigators found soldering equipment, which is typically used to weld pieces of metal together, law-enforcement officials said. Arian Campo-flores, WSJ, "Mail Bomb Suspect Sayoc Appears in Court After New Package Found in Atlanta," 29 Oct. 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'solder.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of solder


14th century, in the meaning defined at sense 1


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

History and Etymology for solder


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

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Statistics for solder

Last Updated

17 Aug 2019

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Time Traveler for solder

The first known use of solder was in the 14th century

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More Definitions for solder



English Language Learners Definition of solder

 (Entry 1 of 2)

: a mixture of metals (such as lead and tin) that is melted and used to join metal parts together



English Language Learners Definition of solder (Entry 2 of 2)

: to join (something made of metal) to something else with solder


sol·​der | \ ˈsä-dər How to pronounce solder (audio) \

Kids Definition of solder

 (Entry 1 of 2)

: a metal or a mixture of metals used when melted to join or repair surfaces of metal


soldered; soldering

Kids Definition of solder (Entry 2 of 2)

: to join together or repair with solder

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More from Merriam-Webster on solder

Rhyming Dictionary: Words that rhyme with solder

Spanish Central: Translation of solder

Nglish: Translation of solder for Spanish Speakers Encyclopedia article about solder

Comments on solder

What made you want to look up solder? Please tell us where you read or heard it (including the quote, if possible).


a usually brief trip or an expedition

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