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Ostia

American

[os-tee-uh, aw-styah] / ˈɒs ti ə, ˈɔ styɑ /

noun

a town in central Italy, SW of Rome: ruins from 4th century b.c.; site of ancient port of Rome.

Ostia British

/ ˈɒstɪə /

noun

an ancient town in W central Italy, originally at the mouth of the Tiber but now about 6 km (4 miles) inland: served as the port of ancient Rome; harbours built by Claudius and Trajan; ruins excavated since 1854

"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.

Arm in arm, young people of different faiths perform the dabke, an Arabic folk dance, in the Italian port of Ostia, elated by a visit from Pope Leo XIV.

From Barron's • Oct. 18, 2025

During its reception at Ostia, the ship was grounded on a shoal, but Claudia Quinta was able to miraculously pull it to safety.

From Textbooks • Apr. 19, 2023

But, on the seafront in Ostia, Erica complained her shopping bills were going through the roof.

From BBC • Sep. 23, 2022

I attended a Bold Spirit “virtual visit” where Mary Jane Cuyler discussed Roman ruins at Ostia, Italy, where she’s field director of excavations at an unearthed synagogue.

From Seattle Times • Sep. 9, 2020

Innocent V. Peter de Tarantaise, a Dominican, cardinal, bishop of Ostia, elected pope at Arezzo, 21st Feb. 1276, crowned at Rome, 23d of the same, died 22d June, 1276 189.

From The Power Of The Popes by Daunou, Pierre Claude Fran?ois

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023