welder

American  

[wel-der] / ˈwɛl dər /

Rarely weldor

noun

welders plural

1. a person who unites or fuses pieces of metal by hammering, compressing, or the like, usually after softening them by heat.

   Our machinists and welders take your metal project from 3D image to the real thing.

2. a tool or machine used to unite or fuse pieces of metal.

   The portable spot welder is connected by a long cable so you can take it to wherever it’s needed.

3. a person or thing that unites other people or things harmoniously.

   She’s a great welder of ideas, writing in a way that revives the best from the past and applies it to today’s issues.

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Other Word Forms

Noun Inflected Forms

• welders
  plural

Etymology

Origin of welder

First recorded in 1805–15; weld ¹ ( def. ) + -er ¹ ( def. )

Explanation

Someone or something whose job involves fusing two pieces of metal together is a welder. If you dream of wielding a blowtorch as you help build a ship, car, or skyscraper, you might enjoy being a welder. A welder's work or hobby is welding — joining one piece of metal to another using heat or pressure, or both. Most welders use a blowtorch that sends showers of sparks into the air as it reaches temperatures of 4,000 degrees or higher. Welders dress in protective gear, including heat-resistant helmets with a darkened lens, safety glasses or goggles, and flame-resistant clothing. A welder is also what we call a machine that is used for welding. The word welder is from weld, which was altered from well, "to boil or rise."

Example Sentences

See Examples For:

welder welders

Reissman said Juncosa once relayed a story about how SpaceX had hired a welder who didn’t think it was possible to set up an automated welding process involving thin aluminum panels.

From The Wall Street Journal ● Jun. 13, 2026

Ali Nassiri, a local welder, spent 30 consecutive hours at the site, using his professional tools to cut through steel beams.

From Los Angeles Times ● May 6, 2026

Amidou Diallo, a welder who has been fruitlessly searching for fuel for his generator, fears the shortages could lead to an increase in crime and a worsened security situation.

From BBC ● Nov. 11, 2025

Festival-goers can compete for the title of best welder, crane operator or backhoe loader -- or be crowned the "Oildorado Queen."

From Barron's ● Oct. 20, 2025

Dad phoned the people who had made my legs and they said it could be repaired by anyone who had a spot welder.

From "Ugly" by Robert Hoge

The funds include an equity investment in Rhoads Industries, a submarine supplier, to help build a submarine facility, as well as training for specialized shipbuilding jobs, including welders and electricians.

From The Wall Street Journal ● Jul. 15, 2026

Plumbers, electricians, welders and other skilled tradespeople are in short supply there.

From MarketWatch ● Jun. 20, 2026

The construction and installation of offshore wind turbines requires the expertise of skilled electrical workers, pipe fitters, welders, pile drivers, iron workers, machinists and carpenters.

From Salon ● May 9, 2026

"For thousands of engineers, electricians, steel welders, and IT specialists, it will mean high-paying and exciting work to build a remarkable aircraft that connects millions of people around the world," he said.

From Barron's ● May 7, 2026

McMillan perceived the same purple glow as Lawrence through his welders glass, and similarly attributed it to the ionization of atmospheric gas.

From "Big Science" by Michael Hiltzik