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weld
weldverb (used with object)to unite or fuse (as pieces of metal) by hammering, compressing, or the like, especially after rendering soft or pasty by heat, and sometimes with the addition of fusible material like or unlike the pieces to be united.
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Weld
WeldnounTheodore Dwight, 1803–95, U.S. abolitionist leader.
weld
1 Americanverb (used with object)
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welds,
present (3rd person singular)
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welded,
past participle, past
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welding
present participle
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to unite or fuse (as pieces of metal) by hammering, compressing, or the like, especially after rendering soft or pasty by heat, and sometimes with the addition of fusible material like or unlike the pieces to be united.
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to bring into complete union, harmony, agreement, etc.
verb (used without object)
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welds,
present (3rd person singular)
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welded,
past participle, past
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welding
present participle
noun
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a welded junction or joint.
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the act of welding or the state of being welded.
noun
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a mignonette, Reseda luteola, of southern Europe, yielding a yellow dye.
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the dye.
noun
verb
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(tr) to unite (pieces of metal or plastic) together, as by softening with heat and hammering or by fusion
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to bring or admit of being brought into close association or union
noun
noun
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a yellow dye obtained from the plant dyer's rocket
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another name for dyer's rocket
noun
Other Word Forms
Derived Forms
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weldabilitynoun
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weldernoun
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weldornoun
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unweldableadjective
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unweldedadjective
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weldableadjective
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weldlessadjective
Inflected Forms
Participles
Conjugated Forms
Present
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weldsimple
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weldssimple
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have weldedperfect
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has weldedperfect
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am weldingprogressive
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are weldingprogressive
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is weldingprogressive
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have been weldingperfect progressive
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has been weldingperfect progressive
Past
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weldedsimple
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had weldedperfect
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was weldingprogressive
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were weldingprogressive
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had been weldingperfect progressive
Future
Etymology
Origin of weld1
First recorded in 1590–1600; variant of well 2 in the obsolete sense “to boil, rise,” influenced by past participle welled
Origin of weld2
1325–75; Middle English welde; cognate with Middle Low German walde, Middle Dutch woude
Explanation
To weld is to use intense heat to merge two pieces of metal together. This word refers to other kinds of joining as well. If two companies merge, they’ve been welded. Have you ever seen someone with a large metal mask and a blowtorch, doing something to pieces of metal? That person — called a welder — was welding, which joins pieces of metal together through heat. Welding is a type of merging, joining, or connecting. The concept also applies to situations that don’t involve metal or flames. You could say a married couple has been welded. This is word for putting things together.
Vocabulary lists containing weld
Gold Rush: Mining and Metals
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On a Pedestal: Marble-ous Words for Sculpture
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October Sky
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Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
See Examples For:
Juncosa, who knew how to weld from his Cornell racing team days, jumped in to help solve the problem.
From The Wall Street Journal ● Jun. 13, 2026
You cannot weld a reactor vessel with one.
From MarketWatch ● Mar. 26, 2026
The city then moved to weld the manhole cover shut.
From Los Angeles Times ● Mar. 25, 2026
The crack may have resulted from "a poor weld or a weld that deteriorated due to train traffic or weather", daily newspaper El Mundo said, citing unidentified technicians with access to the inquiry.
From Barron's ● Jan. 21, 2026
I looked and knew the reason for the failure when I saw a deep rent right at the nearly invisible stripe of weld.
From "October Sky" by Homer Hickam
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When business owner Weld Ransom sold his architectural-design firm, PlanForce, to Teamshares Inc.
From MarketWatch ● Jul. 10, 2026
That Weld County is home to half of Colorado’s cattle might have something to do with his change of diet.
From The Wall Street Journal ● Jul. 8, 2026
Mount Weld is the Lynas Rare Earths mine in Australia with deposits of heavy rare earth elements.
From Barron's ● May 6, 2026
Weld County, where the farmworker event was held, is one of the nation’s top milk producers, supplying enough milk each month this year to fill about 45 Olympic-size swimming pools, according to U.S.
From Salon ● Aug. 27, 2024
Isaac Weld, who travelled in North America in 1795-7, still speaks in his work of the transfer of the Government from Niagara to Toronto.
From Toronto of Old by Henry Scadding
Mr. Vitali’s spirit guide, however, is Paul Revere, and by connecting the two silversmiths “East” welds a link between past and present.
From The Wall Street Journal ● Dec. 18, 2025
Mueller welds steel in her Van Nuys backyard.
From Los Angeles Times ● Feb. 19, 2025
At the end of their useful lifespan, the modules made with the laser welds can be shattered.
From Science Daily ● May 2, 2024
According to the NRC, embrittlement occurs as a result of reactor operation when neutrons from the nuclear fuel irradiate the steel plates and welds used to construct the reactor vessel.
From Seattle Times ● Sep. 14, 2023
It welds itself to my hands and vibrates as if to say, Reporting for battle duty!
From "Kwame Crashes the Underworld" by Craig Kofi Farmer
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Nowadays big ships are usually built in blocks - then welded together - meaning bits can be built in one shipyard, then transported to another for assembly.
From BBC ● Jul. 1, 2026
A collection of small, wall-mounted sculptures, he combined fragments of found and recycled steel and welded them into forms of chains, sharp tools, barbed wire and other metal objects.
From Los Angeles Times ● Apr. 3, 2026
After it’s confirmed in the hospital that she’s gone, we see Harold racing along a twisty turny road in his car, a Jaguar with a hearse top welded onto it.
From Salon ● Feb. 17, 2026
It offers a cost-effective alternative to traditional welded pipe and is ideal for carrying oil and gas, water, and other substances needing high pressure and corrosion resistance.
From Barron's ● Jan. 16, 2026
According to Miss Sadie’s story, Jinx himself had welded that on the gate.
From "Moon Over Manifest" by Clare Vanderpool
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Paddy made the hull out of the mast from a scrap wind turbine before welding a bow and a stern on and then adding an engine.
From BBC ● Aug. 18, 2026
Workers excavated a 3-by 4-foot area to find the source of the leak and will begin welding a patch at the leak site on Thursday.
From Los Angeles Times ● Jul. 23, 2026
According to the LADWP, welding a project of this scope and complexity can take up to 16 hours.
From Los Angeles Times ● Jul. 18, 2026
Until recently, the Scottish government would refuse to hand over public money to support munitions manufacture, prompting a warning that plans for a specialist submarine welding centre on the Clyde might be scuppered.
From BBC ● Jul. 1, 2026
They had also put in the top plug and the nozzle with machine screws rather than welding them.
From "October Sky" by Homer Hickam
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Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.