Dictionary.com
Thesaurus.com

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:

British diplomats in six locations around the world, including Buenos Aires and Santiago in South America, will no longer get hardship payments for working in dangerous cities.

From BBC Aug. 14, 2026

"In cynodonts, embryonic tissues were never observed before, let alone a neonatal line," said co-author María Miceli Baro, a graduate student at the University of Buenos Aires.

From Science Daily Aug. 13, 2026

Nearly five percent of Argentina's territory -- an area roughly equal in size to England -- is under foreign ownership, according to a 2025 report from the University of Buenos Aires and other researchers.

From Barron's Aug. 7, 2026

His brother, who fled to Argentina, was arrested in a trendy Buenos Aires neighborhood and remains in custody, pending Mexico’s extradition request.

From Los Angeles Times Aug. 3, 2026

Once you reach Buenos Aires, take a hypertrain north, across Amazonia to the city of Caracas.

From "Scythe" by Neal Shusterman

Vocabulary.com logo
by dictionary.com

Dictionary.com's Learning Companion

Go beyond just looking up words.
Remember them forever with VocabTrainer.

Start training