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.

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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)

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Buenos Aires Cultural  

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

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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

Aviña’s work even caught the eye of pop-singer Joe Jonas, who wore an Argentina jersey featuring prayer hands and a message that read, “Protect me from envy” at a concert in Buenos Aires.

From Los Angeles Times • Jun. 5, 2026

"I train half in Buenos Aires and half in Bolivia, so I have to pay to take them to Bolivia and then I need to travel to Argentina. It's expensive."

From BBC • May 27, 2026

"For example, the long-tailed pygmy rice rat, whose original habitat was the Patagonian Andes and north-western Argentina, can now be found in the province of Buenos Aires alongside other rodents that transmit the disease."

From BBC • May 10, 2026

He moved into a rented home in a quiet neighborhood on the outskirts of Buenos Aires where he was supposed to receive round-the-clock home care.

From The Wall Street Journal • Apr. 16, 2026

He was a spent force long before he was finally caught in Buenos Aires near the end of the war.

From "The Woman All Spies Fear" by Amy Butler Greenfield