OregonPronunciation: /ˈɒrɪg(ə)n/Definition of Oregon a state in the north-western US, on the Pacific coast; population 3,790,060 (est. 2008); capital, Salem. British claims to Oregon were formally ceded to the US in 1846 and it became the 33rd state in 1859. Derivatives OregonianPronunciation: /ˌɒrɪˈgəʊnɪən/ adjective & noun Oregon in other Oxford dictionaries Definition of Oregon in the US English dictionary
