fastening two pieces of metal together by softening with heat and applying pressure
"The skilled worker used a torch to weld the broken rail back onto the track."
The action or process of welding:
"The intense heat required for welding made it difficult to work in that small garage without proper ventilation."
joining two materials (especially two metals) together by applying heat, pressure and filler, either separately or in any combination, or
"The construction worker used welding to join two steel beams together by applying intense heat and a metal rod."
In plain English: Welding is joining two pieces of metal together by melting them so they fuse into one solid piece when cooled.
"The welding project was completed ahead of schedule thanks to his skill with metal."
Usage: Use this noun to describe the specific industrial process of fusing metal parts with intense heat rather than general gluing. It refers strictly to joining materials that are melted together at high temperatures, distinguishing it from cold-joining methods like soldering or riveting.
present participle of weld
"The worker is welding two metal plates together to create a strong joint."
In plain English: Welding is joining two pieces of metal together by melting them so they fuse into one solid piece when cooled.
"The construction worker spent all morning welding together the steel beams for the new bridge."
This word comes from the verb weld combined with the suffix -ing. It originally meant the act of joining materials by melting them together.