Definition of Ohio
1 river 981 miles (1578 kilometers) long in the eastern part of the U.S. flowing west from the junction of the Allegheny and Monongahela rivers in western Pennsylvania, forming the boundaries between Ohio and West Virginia, Ohio and Kentucky, Indiana and Kentucky, and Illinois and Kentucky, and then flowing into the Mississippi River at the southern tip of Illinois
2 state in northeast central U.S. bordering on Lake Erie; capital Columbus area 41,222 square miles (106,765 square kilometers), population 11,536,504
Ohioanplay \-ˈhī-ō-ən\ noun
OHIO Defined for English Language Learners
Definition of Ohio for English Language Learners
: state of the U.S.
the Ohio River : river in the U.S.
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