MichiganPronunciation: /ˈmɪʃɪg(ə)n/Definition of Michigan a state in the northern US, bordered on the west, north, and east by Lakes Michigan, Superior, Huron, and Erie; population 10,003,422 (est. 2008); capital, Lansing. It was acquired from Britain by the US in 1783, becoming the 26th state in 1837. Derivatives MichiganderPronunciation: /ˌmɪʃɪˈgandə/ noun Michigan in other Oxford dictionaries Definition of Michigan in the US English dictionary