# Ohio

> English word · Proper noun · IPA /oʊˈhaɪoʊ/ · frequency rank #2,455

## Definitions
1. A state of the United States. Capital and largest city: Columbus.
2. A river in the United States, flowing 981 miles from the confluence of the Allegheny and Monongahela at Pittsburgh, Pennsylvania through Ohio, West Virginia, Kentucky, Indiana and Illinois along state borders and emptying into the Mississippi at Cairo, Illinois.
3. Ellipsis of Ohio University.
4. A locale in the United States; named for the state:
5. A locale in the United States; named for the state:
6. A locale in the United States; named for the state:
7. A locale in the United States; named for the state:
8. A locale in the United States; named for the state:
9. A locale in Canada:
10. A locale in Canada:
11. A locale in Canada:

## Etymology
From Seneca Ohi꞉yoʼ, a proper name derived from ohi꞉yo꞉h (“good river”). The name of the Allegheny river, which the Lenape and Iroquois considered to be part of the same single river as the Ohio, means the same thing in Unami.

## Easily confused with
- **oi** (https://plainspell.com/en/vs/ohio-vs-oi)
- **oo** (https://plainspell.com/en/vs/ohio-vs-oo)
- **oil** (https://plainspell.com/en/vs/ohio-vs-oil)
- **OOO** (https://plainspell.com/en/vs/ohio-vs-ooo)
- **ono** (https://plainspell.com/en/vs/ohio-vs-ono)
- **ohm** (https://plainspell.com/en/vs/ohio-vs-ohm)
- **Ori** (https://plainspell.com/en/vs/ohio-vs-ori)
- **oni** (https://plainspell.com/en/vs/ohio-vs-oni)
- **OSI** (https://plainspell.com/en/vs/ohio-vs-osi)
- **oui** (https://plainspell.com/en/vs/ohio-vs-oui)
- **oso** (https://plainspell.com/en/vs/ohio-vs-oso)
- **OPI** (https://plainspell.com/en/vs/ohio-vs-opi)
- **oki** (https://plainspell.com/en/vs/ohio-vs-oki)
- **omi** (https://plainspell.com/en/vs/ohio-vs-omi)
- **onto** (https://plainspell.com/en/vs/ohio-vs-onto)
- **otto** (https://plainspell.com/en/vs/ohio-vs-otto)
- **Oslo** (https://plainspell.com/en/vs/ohio-vs-oslo)
- **Otis** (https://plainspell.com/en/vs/ohio-vs-otis)
- **omit** (https://plainspell.com/en/vs/ohio-vs-omit)
- **Oreo** (https://plainspell.com/en/vs/ohio-vs-oreo)

## Common misspellings (4)
`hoio`, `ohhio`, `ohoi`, `oiho`

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-05-06.
Canonical page: https://plainspell.com/en/word/ohio