say it: STEE-vuhn-suhn
stephenson is a noun meaning "English railway pioneer who built the first passenger railway in 1825 (1781-1848)". It carries one recorded sense.
English railway pioneer who built the first passenger railway in 1825 (1781-1848)
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 stephenson 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.