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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.

To accompany this change, Trump is preparing to install a “Garden of Heroes” in Washington, D.C.’s West Potomac Park featuring statues of historical figures handpicked by himself.

From Salon • May 11, 2026

President Donald Trump, who owns the golf club in Potomac Falls, Va., was asked Thursday about the latest LIV developments, and said he believed LIV golfers would end up back on the PGA Tour.

From MarketWatch • Apr. 30, 2026

The 7th District, which looks like a scorpion, is appropriately dastardly, stretching from mountainous country in the western part of the state straight to expressways over the Potomac River into Washington D.C.

From Slate • Apr. 22, 2026

In January, a 72-inch diameter pipe ruptured, spewing 243 million gallons of raw sewage into the Potomac River in one of the worst wastewater spills in U.S. history.

From The Wall Street Journal • Apr. 20, 2026

He was snooping around the telegraph office when the message came in: Two men had been seen crossing the Potomac.

From "Chasing Lincoln's Killer" by James L. Swanson

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