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Byzantium

American  
[bih-zan-shee-uhm, -tee-uhm] / bɪˈzæn ʃi əm, -ti əm /

noun

  1. an ancient Greek city on the Bosporus and the Sea of Marmara: Constantine I rebuilt it and renamed it Constantinople a.d.


Byzantium British  
/ baɪ-, bɪˈzæntɪəm /

noun

  1. an ancient Greek city on the Bosporus: founded about 660 bc ; rebuilt by Constantine I in 330 ad and called Constantinople; present-day Istanbul

"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

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.

A priest traces the endless conflict of Russia and the West to the Crusaders’ sack of Constantinople, formerly Byzantium, in 1204.

From The Wall Street Journal • Feb. 22, 2026

While Anna failed to reconcile her love for her father with her love of historical truth, recent scholars of Byzantium have rightly acclaimed “The Alexiad” as a historical source of first importance.

From The Wall Street Journal • Jan. 9, 2026

War risked defeat, while diplomacy used bribes and the soft power of cultural influence to target the Huns’ vulnerabilities: Their rulers needed money and prestige—either from conquest or recognition—to manage followers; Byzantium gave them both.

From The Wall Street Journal • Oct. 17, 2025

The relative political and religious unity Justinian’s campaigns brought back to Byzantium declined steadily after his death.

From Textbooks • Jan. 1, 2020

The girl, who would grow up without a father, was named Theodora, after the scandalous empress of Byzantium whom Sourmelina admired.

From "Middlesex: A Novel" by Jeffrey Eugenides

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