Weld/weld/ Definition 1 of 3Pro Tip 1/3Industrial Skill Welding as a verb refers to a skilled trade used in construction and manufacturing. Qualified workers weld beams when constructing a skyscraper. Pro Tip 2/3Heat Required Weld always involves melting materials, often metals, to join them. The artist used a torch to weld the sculpture's metal pieces. Pro Tip 3/3Strong Connection Welding creates very strong joins, signaling permanence and durability. The bridge's durability comes from the strong welds between its sections.