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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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

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

Faena recalled that when he was developing his Buenos Aires hotel, which is inside a building designed by the French architect Philippe Starck, he sent Starck pictures of his Uruguayan paradise.

From The Wall Street Journal • Jun. 9, 2026

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

The problem was the train in Buenos Aires.

From "Scythe" by Neal Shusterman