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)
Abbreviation and zip code: OH
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)
Ohio in American English
(oʊˈhaɪoʊ)
1.
river formed by the junction of the Monongahela & the Allegheny at Pittsburgh, flowing southwestward into theMississippi: 981 mi (1,579 km)
2.
Midwestern state of the NC U.S.: admitted, 1803; 40,948 sq mi (106,056 sq km); pop. 11,353,000; cap. Columbus
abbrev. OH or O
Word origin
(sense 1) < Fr < Iroquoian, lit., fine (or large) river; (sense 2) after the river