Ohio

American  

[oh-hahy-oh] / oʊˈhaɪ oʊ /

noun

1. a state in the northeastern central United States: a part of the Midwest. 41,222 sq. mi. (106,765 sq. km). Columbus. OH (for use with zip code), O.

2. a river formed by the confluence of the Allegheny and Monongahela rivers, flowing southwest from Pittsburgh, Pa., to the Mississippi in southern Illinois. 981 miles (1,580 km) long.

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Ohio British  

/ əʊˈhaɪəʊ /

noun

1. Abbreviation and zip code: OH.  a state of the central US, in the Midwest on Lake Erie: consists of prairies in the W and the Allegheny plateau in the E, the Ohio River forming the S and most of the E borders. Capital: Columbus. Pop: 11 435 798 (2003 est). Area: 107 044 sq km (41 330 sq miles)

2. a river in the eastern US, formed by the confluence of the Allegheny and Monongahela Rivers at Pittsburgh: flows generally W and SW to join the Mississippi at Cairo, Illinois, as its chief E tributary. Length: 1570 km (975 miles)

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Ohio Cultural  

1. State in the northern United States bordered by Michigan and Lake Erie to the north, Pennsylvania and West Virginia to the east, West Virginia and Kentucky to the south, and Indiana to the west. Its capital is Columbus, and its largest city is Cleveland.

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Other Word Forms

• Ohioan
  adjective

Example Sentences

“When I have a question about antitrust law, I talk to him,” said Ohio Attorney General Dave Yost, a Republican.

From The Wall Street Journal • May 26, 2026

He grew up in Dayton, Ohio, before moving to East Lansing, Mich., for college.

From Los Angeles Times • May 26, 2026

“Leo sees the challenge of AI as a choice about its design, and about who gets to make those choices,” said Vincent Miller, a professor of theology at the University of Dayton, Ohio.

From The Wall Street Journal • May 25, 2026

Similar signs of reversal have appeared in some other Midwest metros, including Dayton and Canton, in Ohio, and Racine, Wis.

From The Wall Street Journal • May 25, 2026

I toss the covers back, hoping my Ohio State sweatshirt is clean.

From "Blended" by Sharon M. Draper