[ muh-nong-guh-hee-luh, ‐hey-luh ]

  1. a river flowing from northern West Virginia through southwestern Pennsylvania into the Ohio River. 128 miles (205 km) long.

Origin of Monongahela

First recorded in 1750–60; from Unami (an Eastern Algonquian language): “falling banks” (referring to the instability of the banks of the river)

Words Nearby Monongahela Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2024

How to use Monongahela in a sentence

  • Washington attacked a French encampment at the confluence of the Alleghany and Monongahela.

  • Before my eyes rises the Monongahela river, carrying barges filled with armed men.

    Prison Memoirs of an Anarchist | Alexander Berkman
  • Associated with the muddy Missouri he labors under the delusion that all rivers are muddy—even the Monongahela.

    Watch Yourself Go By | Al. G. Field
  • For the third time "Al-f-u-r-d" ducked—or rather, was ducked, swallowing another quart or two of Monongahela.

    Watch Yourself Go By | Al. G. Field
  • Brownsville was at the head of navigation on the Monongahela River in the palmy days of the old "pike."

    Watch Yourself Go By | Al. G. Field

British Dictionary definitions for Monongahela


/ (məˌnɒŋɡəˈhiːlə) /

  1. a river in the northeastern US, flowing generally north to the Allegheny River at Pittsburgh, Pennsylvania, forming the Ohio River. Length: 206 km (128 miles)

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012