OhioPronunciation: /əʊˈhʌɪəʊ/Definition of Ohio a state in the north-eastern US, bordering on Lake Erie; population 11,485,910 (est. 2008); capital, Columbus. Acquired by Britain from France in 1763 and by the US in 1783, it became the 17th state of the US in 1803. Derivatives Ohioan adjective & noun Ohio in other Oxford dictionaries Definition of Ohio in the US English dictionary
