say it: WEL-ding
welding is a noun meaning "fastening two pieces of metal together by softening with heat and applying pressure". It carries one recorded sense.
fastening two pieces of metal together by softening with heat and applying pressure
Forms marked · are formed by the regular rule rather than recorded in the source data. English keeps a few hundred irregulars and the rest follow the pattern, so the rule is right far more often than not — but it is a rule, and the mark says so.
Definitions, synonyms and semantic relations for welding come from Princeton University’s WordNet. The pronunciation comes from the CMU Pronouncing Dictionary. Commonness is measured against a corpus of everyday English. Full sources and licences.