Sebastian

American

[si-bas-chuhn] / sɪˈbæs tʃən /

noun

Saint, died a.d. 288?, Roman martyr.
a male given name.

Sebastian British

/ sɪˈbæstjən /

noun

Saint. died ?288 _ad , Christian martyr. According to tradition, he was first shot with arrows and then beaten to death. Feast day: Jan 20

"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

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Sebastian

Sebastian Rucci, principal developer of the Imperial Valley data center, said he will fight for his project to move forward and that there’s an environmentally sound way to do it.

From Los Angeles Times ● Oct. 14, 2026

The Oxford project began in 2022, when lead author Dr. Sebastian Saner, Dr. Oana Bazavan, and their colleagues started developing a way to simulate lattice gauge theories using a hybrid quantum system.

From Science Daily ● Oct. 13, 2026

The launch is a major vote of confidence in Meta’s AI capabilities and the Meta Superintelligence Labs team, Baird analyst Colin Sebastian wrote in a Monday note, citing the models’ capabilities and new monetization areas.

From MarketWatch ● Oct. 12, 2026

Sebastian Guggolz, head of the German Publishers and Booksellers Association, said the book trade was struggling with what approach to take.

From Barron's ● Oct. 9, 2026

"He's a great little confider. He said he had a date with Brett at San Sebastian."

From "The Sun Also Rises" by Ernest Hemingway

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