weld
1 Americanverb (used with object)
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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)
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
- unweldable adjective
- unwelded adjective
- weldability noun
- weldable adjective
- welder noun
- weldless adjective
- weldor noun
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
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.
You cannot weld a reactor vessel with one.
From MarketWatch • Mar. 26, 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
A faulty or damaged weld on a rail is being investigated as a factor in the crash, Spanish media report.
From BBC • Jan. 20, 2026
Powers says she wants to keep the sculptures in place, potentially creating a walking tour to Venice’s Mosaic Tile House, co-owned by her friend Gonzalo Duran, who taught her how to weld.
From Los Angeles Times • Aug. 15, 2024
“How about we weld a washer or something at the bottom of the casement to be our nozzle?”
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.