welding - Wiktionary, the free dictionary
From Wiktionary, the free dictionary

By surface analysis, weld + -ing.
welding
- present participle and gerund of weld
welding (plural weldings)
- The action or process of welding:
- joining two materials (especially two metals) together by applying heat, pressure and filler, either separately or in any combination, or
- binding together inseparably; uniting closely or intimately.
the action or process of binding together inseparably; uniting closely or intimately