Bosporus

American  

[bos-per-uhs] / ˈbɒs pər əs /

Also Bosphorus

noun

1. a strait connecting the Black Sea and the Sea of Marmara. 18 miles (29 km) long.

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Bosporus British  

/ ˈbɒspərəs, ˈbɒsfərəs /

noun

1. a strait between European and Asian Turkey, linking the Black Sea and the Sea of Marmara

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Bosporus Cultural  

1. Strait separating the European and Asian portions of Turkey. The Bosporus is a link between the Black Sea and the Mediterranean Sea.

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Discover More

It is an important shipping route for Russia, whose northern routes are mostly blocked by ice in winter, and for other nations that border the Black Sea or use any of the many major rivers that flow into it.

Other Word Forms

• Bosporan
  adjective
• Bosporanic
  adjective
• Bosporian
  adjective

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Example Sentences

See Examples For:

Bosporus

Physical chokepoints include waterways such as the Strait of Hormuz or the Bosporus and Dardanelles, which connect the Mediterranean to the Black Sea, and thus Russian and Ukrainian grain exports.

From The Wall Street Journal ● Apr. 12, 2026

Together with the Bosporus Strait, it serves as a vital route for commercial shipping between Europe and Asia.

From BBC ● Aug. 8, 2025

On Saturday, authorities at the Bulgarian port of Varna did not confirm whether the Anna-Theresa will enter the port or will continue to the Bosporus Strait.

From Washington Times ● Sep. 2, 2023

The two vessels sailed through a temporary corridor for civilian ships from Ukraine’s Black Sea ports to the Bosporus, Kubrakov said on the social media site X, formerly known as Twitter.

From Seattle Times ● Sep. 2, 2023

Hārūn then marched against Nicomedia, where he vanquished the domesticus, the chief commander of the Greek forces, and pitched his camp on the shores of the Bosporus.

From Encyclopaedia Britannica, 11th Edition, Volume 5, Slice 1 "Calhoun" to "Camoens" by Various

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