say it: AH-puhn-hahy-mur
oppenheimer is a noun meaning "United States physicist who directed the project at Los Alamos that developed the first atomic bomb (1904-1967)". It carries one recorded sense.
United States physicist who directed the project at Los Alamos that developed the first atomic bomb (1904-1967)
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 oppenheimer 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.