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Potomac

American  
[puh-toh-muhk] / pəˈtoʊ mək /

noun

  1. a river flowing SE from the Allegheny Mountains in West Virginia, along the boundary between Maryland and Virginia to the Chesapeake Bay. 287 miles (460 km) long.

  2. a city in central Maryland, near Washington, D.C.


Potomac British  
/ pəˈtəʊmək /

noun

  1. a river in the E central US, rising in the Appalachian Mountains of West Virginia: flows northeast, then generally southeast to Chesapeake Bay. Length (from the confluence of headstreams): 462 km (287 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

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

Construction on Trump's 250-foot arch, planned for a site across the Potomac River from Washington DC just outside the Arlington National Cemetery, was expected to begin this month.

From BBC ● Sep. 20, 2026

John Quincy Adams used to walk from the White House down to the Potomac and go swimming — often in the nude.

From Salon ● Sep. 11, 2026

The filing also suggests what could replace the center if the building were to be torn down: “a large outdoor amphitheater overlooking the Potomac River … has been proposed, by some, for many years.”

From Los Angeles Times ● Aug. 25, 2026

The fishing: The upper Potomac River near Leesburg is one of the more underrated fisheries on the East Coast, known for its smallmouth bass.

From The Wall Street Journal ● Jul. 8, 2026

After speaking with “Little Phil” Sheridan, who enthusiastically agrees to Grant’s plan, the two continue on to the headquarters of Major General George G. Meade, the commander of the Army of the Potomac.

From "Lincoln's Last Days: The Shocking Assassination that Changed America Forever" by Bill O'Reilly

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