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Buenos Aires

American  
[bwey-nuhs ahyuhr-iz, boh-nuhs, bwe-naws ahy-res] / ˈbweɪ nəs ˈaɪər ɪz, ˈboʊ nəs, ˈbwɛ nɔs ˈaɪ rɛs /

noun

  1. a seaport in and the capital of Argentina, in the eastern part, on the Río de la Plata.


Buenos Aires British  
/ ˈbwenos ˈaires, ˈbweɪnɒs ˈaɪrɪz /

noun

  1. the capital of Argentina, a major port and industrial city on the Río de la Plata estuary: became capital in 1880; university (1821). Pop: 13 349 000 (2005 est)

"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

Buenos Aires Cultural  
  1. Capital of Argentina and largest city in the country, located in eastern Argentina near Uruguay.


Discover More

One of the largest cities in Latin America, Buenos Aires is Argentina's chief port and financial, industrial, commercial, and social center.

La Prensa and La Nación are two of its daily newspapers, popular throughout the Spanish-speaking world.

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:

The party in Buenos Aires and beyond lasted for days.

From BBC Jul. 17, 2026

Four years later, without Cruyff, they reached the final again, only to be beaten by Argentina in extra time under a sky of Buenos Aires ticker tape.

From BBC Jul. 17, 2026

To investigate the connection, Centrón and her colleagues analyzed 68 bacterial strains collected in 2018 and 2020 from sediment in a protected nature reserve in the Paraná delta, a wetland region north of Buenos Aires.

From Science Daily Jun. 23, 2026

Tree had performed in Buenos Aires, Argentina, on June 4.

From Los Angeles Times Jun. 14, 2026

Fischer arrived in Buenos Aires a few days before the start of the first round against Petrosian.

From "Endgame" by Frank Brady

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